202221020120212 has 18 divisors (see below), whose sum is σ = 362728691813054. Its totient is φ = 98644400055360.

The previous prime is 202221020120209. The next prime is 202221020120219. The reversal of 202221020120212 is 212021020122202.

It can be written as a sum of positive squares in 3 ways, for example, as 8061431418756 + 194159588701456 = 2839266^2 + 13934116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202221020120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221020120219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15037249383 + ... + 15037262830.

Almost surely, 2^{202221020120212} is an apocalyptic number.

It is an amenable number.

202221020120212 is a deficient number, since it is larger than the sum of its proper divisors (160507671692842).

202221020120212 is a wasteful number, since it uses less digits than its factorization.

202221020120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30074512299 (or 30074512256 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202221020120212 its reverse (212021020122202), we get a palindrome (414242040242414).

The spelling of 202221020120212 in words is "two hundred two trillion, two hundred twenty-one billion, twenty million, one hundred twenty thousand, two hundred twelve".