202120121212 has 6 divisors (see below), whose sum is σ = 353710212128. Its totient is φ = 101060060604.

The previous prime is 202120121201. The next prime is 202120121233. The reversal of 202120121212 is 212121021202.

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 as a sum of consecutive naturals, namely, 25265015148 + ... + 25265015155.

Almost surely, 2^202120121212 is an apocalyptic number.

It is an amenable number.

202120121212 is a deficient number, since it is larger than the sum of its proper divisors (151590090916).

202120121212 is a wasteful number, since it uses less digits than its factorization.

202120121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50530030307 (or 50530030305 counting only the distinct ones).

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

Adding to 202120121212 its reverse (212121021202), we get a palindrome (414241142414).

The spelling of 202120121212 in words is "two hundred two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twelve".