100020321232 has 40 divisors (see below), whose sum is σ = 208715406984. Its totient is φ = 46158987264.

The previous prime is 100020321221. The next prime is 100020321239. The reversal of 100020321232 is 232123020001.

It can be written as a sum of positive squares in 4 ways, for example, as 2361571216 + 97658750016 = 48596^2 + 312504^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020321239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054728 + ... + 4079320.

Almost surely, 2^100020321232 is an apocalyptic number.

It is an amenable number.

100020321232 is an abundant number, since it is smaller than the sum of its proper divisors (108695085752).

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

100020321232 is a wasteful number, since it uses less digits than its factorization.

100020321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44167 (or 44161 counting only the distinct ones).

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

Adding to 100020321232 its reverse (232123020001), we get a palindrome (332143341233).

The spelling of 100020321232 in words is "one hundred billion, twenty million, three hundred twenty-one thousand, two hundred thirty-two".