100221210212100 has 144 divisors (see below), whose sum is σ = 290108946005760. Its totient is φ = 26713163980800.

The previous prime is 100221210212099. The next prime is 100221210212161. The reversal of 100221210212100 is 1212012122001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100221210212100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9606168484 + ... + 9606178916.

Almost surely, 2^{100221210212100} is an apocalyptic number.

100221210212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221210212100 is an abundant number, since it is smaller than the sum of its proper divisors (189887735793660).

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

100221210212100 is a wasteful number, since it uses less digits than its factorization.

100221210212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22350 (or 22343 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100221210212100 its reverse (1212012122001), we get a palindrome (101433222334101).

The spelling of 100221210212100 in words is "one hundred trillion, two hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred".