100021212112100 has 72 divisors (see below), whose sum is σ = 226689276457728. Its totient is φ = 38234099411200.

The previous prime is 100021212112093. The next prime is 100021212112127. The reversal of 100021212112100 is 1211212120001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17297996 + ... + 22344195.

It is an arithmetic number, because the mean of its divisors is an integer number (3148462173024).

Almost surely, 2^{100021212112100} is an apocalyptic number.

100021212112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021212112100 is an abundant number, since it is smaller than the sum of its proper divisors (126668064345628).

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

100021212112100 is a wasteful number, since it uses less digits than its factorization.

100021212112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39643325 (or 39643318 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100021212112100 its reverse (1211212120001), we get a palindrome (101232424232101).

The spelling of 100021212112100 in words is "one hundred trillion, twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred".