22212200111212 has 48 divisors (see below), whose sum is σ = 41872448217600. Its totient is φ = 10275978928320.

The previous prime is 22212200111209. The next prime is 22212200111237. The reversal of 22212200111212 is 21211100221222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22212200111212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37684989 + ... + 38269867.

It is an arithmetic number, because the mean of its divisors is an integer number (872342671200).

Almost surely, 2^{22212200111212} is an apocalyptic number.

It is an amenable number.

22212200111212 is a deficient number, since it is larger than the sum of its proper divisors (19660248106388).

22212200111212 is a wasteful number, since it uses less digits than its factorization.

22212200111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596566 (or 596564 counting only the distinct ones).

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

Adding to 22212200111212 its reverse (21211100221222), we get a palindrome (43423300332434).

The spelling of 22212200111212 in words is "twenty-two trillion, two hundred twelve billion, two hundred million, one hundred eleven thousand, two hundred twelve".