100021131232 has 96 divisors (see below), whose sum is σ = 217170180864. Its totient is φ = 44967475200.

The previous prime is 100021131209. The next prime is 100021131241. The reversal of 100021131232 is 232131120001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49343403 + ... + 49345429.

It is an arithmetic number, because the mean of its divisors is an integer number (2262189384).

Almost surely, 2^100021131232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100021131232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108585090432).

100021131232 is an abundant number, since it is smaller than the sum of its proper divisors (117149049632).

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

100021131232 is a wasteful number, since it uses less digits than its factorization.

100021131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100021131232 its reverse (232131120001), we get a palindrome (332152251233).

The spelling of 100021131232 in words is "one hundred billion, twenty-one million, one hundred thirty-one thousand, two hundred thirty-two".