100021120212112 has 120 divisors (see below), whose sum is σ = 225329776489152. Its totient is φ = 42644844576000.

The previous prime is 100021120212077. The next prime is 100021120212113. The reversal of 100021120212112 is 211212021120001.

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

It is not an unprimeable number, because it can be changed into a prime (100021120212113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1376148 + ... + 14210419.

Almost surely, 2^{100021120212112} is an apocalyptic number.

It is an amenable number.

100021120212112 is an abundant number, since it is smaller than the sum of its proper divisors (125308656277040).

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

100021120212112 is a wasteful number, since it uses less digits than its factorization.

100021120212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15586725 (or 15586700 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100021120212112 its reverse (211212021120001), we get a palindrome (311233141332113).

The spelling of 100021120212112 in words is "one hundred trillion, twenty-one billion, one hundred twenty million, two hundred twelve thousand, one hundred twelve".