222121222202100 has 72 divisors (see below), whose sum is σ = 692106946730080. Its totient is φ = 54675993156480.

The previous prime is 222121222202063. The next prime is 222121222202149. The reversal of 222121222202100 is 1202222121222.

It is a congruent number.

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, 28477075870 + ... + 28477083669.

Almost surely, 2^{222121222202100} is an apocalyptic number.

222121222202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121222202100 is an abundant number, since it is smaller than the sum of its proper divisors (469985724527980).

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

222121222202100 is a wasteful number, since it uses less digits than its factorization.

222121222202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56954159569 (or 56954159562 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222121222202100 its reverse (1202222121222), we get a palindrome (223323444323322).

The spelling of 222121222202100 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, one hundred".