121221010222202 has 24 divisors (see below), whose sum is σ = 201843248302836. Its totient is φ = 54554910080000.

The previous prime is 121221010222181. The next prime is 121221010222231. The reversal of 121221010222202 is 202222010122121.

It can be written as a sum of positive squares in 2 ways, for example, as 120215019276121 + 1005990946081 = 10964261^2 + 1002991^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2479744199 + ... + 2479793082.

Almost surely, 2^{121221010222202} is an apocalyptic number.

121221010222202 is a deficient number, since it is larger than the sum of its proper divisors (80622238080634).

121221010222202 is a wasteful number, since it uses less digits than its factorization.

121221010222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959537406 (or 4959537395 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121221010222202 its reverse (202222010122121), we get a palindrome (323443020344323).

The spelling of 121221010222202 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, ten million, two hundred twenty-two thousand, two hundred two".