22122211201212 has 24 divisors (see below), whose sum is σ = 51935170677376. Its totient is φ = 7328830704048.

The previous prime is 22122211201169. The next prime is 22122211201217. The reversal of 22122211201212 is 21210211222122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122211201217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5654960008 + ... + 5654963919.

Almost surely, 2^{22122211201212} is an apocalyptic number.

It is an amenable number.

22122211201212 is an abundant number, since it is smaller than the sum of its proper divisors (29812959476164).

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

22122211201212 is a wasteful number, since it uses less digits than its factorization.

22122211201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11309924097 (or 11309924095 counting only the distinct ones).

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

Adding to 22122211201212 its reverse (21210211222122), we get a palindrome (43332422423334).

The spelling of 22122211201212 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred eleven million, two hundred one thousand, two hundred twelve".