202110221212 has 12 divisors (see below), whose sum is σ = 353803889320. Its totient is φ = 101023395696.

The previous prime is 202110221189. The next prime is 202110221263. The reversal of 202110221212 is 212122011202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7914387 + ... + 7939882.

Almost surely, 2^202110221212 is an apocalyptic number.

It is an amenable number.

202110221212 is a deficient number, since it is larger than the sum of its proper divisors (151693668108).

202110221212 is a wasteful number, since it uses less digits than its factorization.

202110221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15857460 (or 15857458 counting only the distinct ones).

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

Adding to 202110221212 its reverse (212122011202), we get a palindrome (414232232414).

The spelling of 202110221212 in words is "two hundred two billion, one hundred ten million, two hundred twenty-one thousand, two hundred twelve".