22212112021212 has 24 divisors (see below), whose sum is σ = 51828620432512. Its totient is φ = 7403986047600.

The previous prime is 22212112021199. The next prime is 22212112021237. The reversal of 22212112021212 is 21212021121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4586464 + ... + 8090727.

Almost surely, 2^{22212112021212} is an apocalyptic number.

It is an amenable number.

22212112021212 is an abundant number, since it is smaller than the sum of its proper divisors (29616508411300).

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

22212112021212 is a wasteful number, since it uses less digits than its factorization.

22212112021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823209 (or 12823207 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22212112021212 its reverse (21212021121222), we get a palindrome (43424133142434).

The spelling of 22212112021212 in words is "twenty-two trillion, two hundred twelve billion, one hundred twelve million, twenty-one thousand, two hundred twelve".