221012100202000 has 80 divisors (see below), whose sum is σ = 534536768742912. Its totient is φ = 88383415689600.

The previous prime is 221012100201989. The next prime is 221012100202043. The reversal of 221012100202000 is 202001210122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 5134182 + ... + 21642181.

Almost surely, 2^{221012100202000} is an apocalyptic number.

221012100202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221012100202000 is an abundant number, since it is smaller than the sum of its proper divisors (313524668540912).

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

221012100202000 is a wasteful number, since it uses less digits than its factorization.

221012100202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780513 (or 26780497 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221012100202000 its reverse (202001210122), we get a palindrome (221214101412122).

The spelling of 221012100202000 in words is "two hundred twenty-one trillion, twelve billion, one hundred million, two hundred two thousand".