22212012121012 has 48 divisors (see below), whose sum is σ = 45036910114560. Its totient is φ = 9388126202112.

The previous prime is 22212012121009. The next prime is 22212012121073. The reversal of 22212012121012 is 21012121021222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20917314 + ... + 21953542.

It is an arithmetic number, because the mean of its divisors is an integer number (938268960720).

Almost surely, 2^{22212012121012} is an apocalyptic number.

It is an amenable number.

22212012121012 is an abundant number, since it is smaller than the sum of its proper divisors (22824897993548).

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

22212012121012 is a wasteful number, since it uses less digits than its factorization.

22212012121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046800 (or 1046798 counting only the distinct ones).

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

Adding to 22212012121012 its reverse (21012121021222), we get a palindrome (43224133142234).

The spelling of 22212012121012 in words is "twenty-two trillion, two hundred twelve billion, twelve million, one hundred twenty-one thousand, twelve".