10221022121212 has 36 divisors (see below), whose sum is σ = 21148180455864. Its totient is φ = 4308627587040.

The previous prime is 10221022121209. The next prime is 10221022121221. The reversal of 10221022121212 is 21212122012201.

It is a self number, because there is not a number n which added to its sum of digits gives 10221022121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427431258 + ... + 427455169.

Almost surely, 2^{10221022121212} is an apocalyptic number.

It is an amenable number.

10221022121212 is an abundant number, since it is smaller than the sum of its proper divisors (10927158334652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221022121212 is a wasteful number, since it uses less digits than its factorization.

10221022121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854886506 (or 854886497 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10221022121212 its reverse (21212122012201), we get a palindrome (31433144133413).

The spelling of 10221022121212 in words is "ten trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, two hundred twelve".