12221212022112 has 48 divisors (see below), whose sum is σ = 32392144512000. Its totient is φ = 4034186489472.

The previous prime is 12221212022083. The next prime is 12221212022113. The reversal of 12221212022112 is 21122021212221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221212022113) 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, 617972112 + ... + 617991887.

It is an arithmetic number, because the mean of its divisors is an integer number (674836344000).

Almost surely, 2^{12221212022112} is an apocalyptic number.

12221212022112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221212022112 is an abundant number, since it is smaller than the sum of its proper divisors (20170932489888).

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

12221212022112 is a wasteful number, since it uses less digits than its factorization.

12221212022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235964115 (or 1235964107 counting only the distinct ones).

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

Adding to 12221212022112 its reverse (21122021212221), we get a palindrome (33343233234333).

The spelling of 12221212022112 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred twelve".