22200001212 has 24 divisors (see below), whose sum is σ = 54052177536. Its totient is φ = 7078261168.

The previous prime is 22200001211. The next prime is 22200001217. The reversal of 22200001212 is 21210000222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40217118 + ... + 40217669.

It is an arithmetic number, because the mean of its divisors is an integer number (2252174064).

Almost surely, 2^22200001212 is an apocalyptic number.

It is an amenable number.

22200001212 is an abundant number, since it is smaller than the sum of its proper divisors (31852176324).

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

22200001212 is a wasteful number, since it uses less digits than its factorization.

22200001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80434817 (or 80434815 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22200001212 its reverse (21210000222), we get a palindrome (43410001434).

The spelling of 22200001212 in words is "twenty-two billion, two hundred million, one thousand, two hundred twelve".