222202112120121 has 192 divisors, whose sum is σ = 375645935845376. Its totient is φ = 114236441510400.

The previous prime is 222202112120119. The next prime is 222202112120129. The reversal of 222202112120121 is 121021211202222.

It is not a de Polignac number, because 222202112120121 - 2¹ = 222202112120119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222202112120129) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12703788186 + ... + 12703805676.

Almost surely, 2^{222202112120121} is an apocalyptic number.

222202112120121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222202112120121 is a deficient number, since it is larger than the sum of its proper divisors (153443823725255).

222202112120121 is a wasteful number, since it uses less digits than its factorization.

222202112120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18612 (or 18589 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222202112120121 its reverse (121021211202222), we get a palindrome (343223323322343).

The spelling of 222202112120121 in words is "two hundred twenty-two trillion, two hundred two billion, one hundred twelve million, one hundred twenty thousand, one hundred twenty-one".