202121122 has 16 divisors (see below), whose sum is σ = 346686912. Its totient is φ = 86574960.

The previous prime is 202121081. The next prime is 202121137. The reversal of 202121122 is 221121202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34872 + ... + 40252.

It is an arithmetic number, because the mean of its divisors is an integer number (21667932).

Almost surely, 2^202121122 is an apocalyptic number.

202121122 is a deficient number, since it is larger than the sum of its proper divisors (144565790).

202121122 is a wasteful number, since it uses less digits than its factorization.

202121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8073.

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

The square root of 202121122 is about 14216.9308220867. The cubic root of 202121122 is about 586.8636811768.

Adding to 202121122 its reverse (221121202), we get a palindrome (423242324).

The spelling of 202121122 in words is "two hundred two million, one hundred twenty-one thousand, one hundred twenty-two".