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2011010201020 = 2251071914920023
BaseRepresentation
bin11101010000111001100…
…011000111010110111100
321010020202202111000101001
4131100321203013112330
5230422022102413040
64135502331500044
7265201464445342
oct35207143072674
97106682430331
102011010201020
11705956916877
122858b72b7624
13117839620c12
146d494c57992
153749e8d459a
hex1d4398c75bc

2011010201020 has 48 divisors (see below), whose sum is σ = 4284907941888. Its totient is φ = 792713944640.

The previous prime is 2011010201003. The next prime is 2011010201029. The reversal of 2011010201020 is 201020101102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2011010200988 and 2011010201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011010201029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2051272 + ... + 2868751.

It is an arithmetic number, because the mean of its divisors is an integer number (89268915456).

Almost surely, 22011010201020 is an apocalyptic number.

2011010201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011010201020 is an abundant number, since it is smaller than the sum of its proper divisors (2273897740868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011010201020 is a wasteful number, since it uses less digits than its factorization.

2011010201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920330 (or 4920328 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2011010201020 its reverse (201020101102), we get a palindrome (2212030302122).

The spelling of 2011010201020 in words is "two trillion, eleven billion, ten million, two hundred one thousand, twenty".

Divisors: 1 2 4 5 10 20 107 191 214 382 428 535 764 955 1070 1910 2140 3820 20437 40874 81748 102185 204370 408740 4920023 9840046 19680092 24600115 49200230 98400460 526442461 939724393 1052884922 1879448786 2105769844 2632212305 3758897572 4698621965 5264424610 9397243930 10528849220 18794487860 100550510051 201101020102 402202040204 502752550255 1005505100510 2011010201020