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101011101020 = 2255050555051
BaseRepresentation
bin101111000010010111…
…0110001010101011100
3100122201122012121002122
41132010232301111130
53123332320213040
6114223122242112
710204102122614
oct1360456612534
9318648177078
10101011101020
1139925151285
12176b04b6338
1396aa13567b
144c6345ba44
152962db01b5
hex1784bb155c

101011101020 has 12 divisors (see below), whose sum is σ = 212123312184. Its totient is φ = 40404440400.

The previous prime is 101011101001. The next prime is 101011101053. The reversal of 101011101020 is 20101110101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101011100989 and 101011101007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525277506 + ... + 2525277545.

It is an arithmetic number, because the mean of its divisors is an integer number (17676942682).

Almost surely, 2101011101020 is an apocalyptic number.

101011101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101011101020 is an abundant number, since it is smaller than the sum of its proper divisors (111112211164).

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

101011101020 is a wasteful number, since it uses less digits than its factorization.

101011101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050555060 (or 5050555058 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101011101020 its reverse (20101110101), we get a palindrome (121112211121).

The spelling of 101011101020 in words is "one hundred one billion, eleven million, one hundred one thousand, twenty".

Divisors: 1 2 4 5 10 20 5050555051 10101110102 20202220204 25252775255 50505550510 101011101020