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101220233020 = 22515732235743
BaseRepresentation
bin101111001000100110…
…0100010111100111100
3100200021012201121021021
41132101030202330330
53124244334424040
6114255552513524
710212221533114
oct1362114427474
9320235647237
10101220233020
1139a22201245
121774a54b8a4
13971156940a
144c8313a044
15297642024a
hex1791322f3c

101220233020 has 24 divisors (see below), whose sum is σ = 213916397184. Its totient is φ = 40230206016.

The previous prime is 101220233003. The next prime is 101220233039. The reversal of 101220233020 is 20332022101.

It is a junction number, because it is equal to n+sod(n) for n = 101220232985 and 101220233003.

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 7 ways as a sum of consecutive naturals, for example, 16114732 + ... + 16121011.

It is an arithmetic number, because the mean of its divisors is an integer number (8913183216).

Almost surely, 2101220233020 is an apocalyptic number.

101220233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220233020 is an abundant number, since it is smaller than the sum of its proper divisors (112696164164).

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

101220233020 is a wasteful number, since it uses less digits than its factorization.

101220233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32235909 (or 32235907 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 101220233020 its reverse (20332022101), we get a palindrome (121552255121).

The spelling of 101220233020 in words is "one hundred one billion, two hundred twenty million, two hundred thirty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 157 314 628 785 1570 3140 32235743 64471486 128942972 161178715 322357430 644714860 5061011651 10122023302 20244046604 25305058255 50610116510 101220233020