221101212122200 has 24 divisors (see below), whose sum is σ = 514060318184580. Its totient is φ = 88440484848800.

The previous prime is 221101212122177. The next prime is 221101212122291. The reversal of 221101212122200 is 2221212101122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552753030106 + ... + 552753030505.

Almost surely, 2^{221101212122200} is an apocalyptic number.

221101212122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221101212122200 is an abundant number, since it is smaller than the sum of its proper divisors (292959106062380).

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

221101212122200 is a wasteful number, since it uses less digits than its factorization.

221101212122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105506060627 (or 1105506060618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221101212122200 its reverse (2221212101122), we get a palindrome (223322424223322).

The spelling of 221101212122200 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twelve million, one hundred twenty-two thousand, two hundred".