100100021200 has 60 divisors (see below), whose sum is σ = 240560441440. Its totient is φ = 40028330880.

The previous prime is 100100021179. The next prime is 100100021257. The reversal of 100100021200 is 2120001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1408111 + ... + 1477489.

Almost surely, 2^100100021200 is an apocalyptic number.

100100021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100100021200 is an abundant number, since it is smaller than the sum of its proper divisors (140460420240).

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

100100021200 is a wasteful number, since it uses less digits than its factorization.

100100021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73004 (or 72993 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100100021200 its reverse (2120001001), we get a palindrome (102220022201).

The spelling of 100100021200 in words is "one hundred billion, one hundred million, twenty-one thousand, two hundred".