100021503232 has 54 divisors (see below), whose sum is σ = 232248620058. Its totient is φ = 42866353152.

The previous prime is 100021503223. The next prime is 100021503233. The reversal of 100021503232 is 232305120001.

It can be written as a sum of positive squares in only one way, i.e., 56484176896 + 43537326336 = 237664^2 + 208656^2 .

It is a super-2 number, since 2×100021503232² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021503233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3974283 + ... + 3999370.

Almost surely, 2^100021503232 is an apocalyptic number.

It is an amenable number.

100021503232 is an abundant number, since it is smaller than the sum of its proper divisors (132227116826).

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

100021503232 is an frugal number, since it uses more digits than its factorization.

100021503232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973683 (or 7973662 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 100021503232 its reverse (232305120001), we get a palindrome (332326623233).

The spelling of 100021503232 in words is "one hundred billion, twenty-one million, five hundred three thousand, two hundred thirty-two".