202121102212 has 24 divisors (see below), whose sum is σ = 378432098240. Its totient is φ = 94172038560.

The previous prime is 202121102203. The next prime is 202121102233. The reversal of 202121102212 is 212201121202.

It is a happy number.

202121102212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21794448 + ... + 21803719.

Almost surely, 2^202121102212 is an apocalyptic number.

It is an amenable number.

202121102212 is a deficient number, since it is larger than the sum of its proper divisors (176310996028).

202121102212 is a wasteful number, since it uses less digits than its factorization.

202121102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43598251 (or 43598249 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202121102212 its reverse (212201121202), we get a palindrome (414322223414).

The spelling of 202121102212 in words is "two hundred two billion, one hundred twenty-one million, one hundred two thousand, two hundred twelve".