12221211121112 has 32 divisors (see below), whose sum is σ = 26579179845120. Its totient is φ = 5159487849120.

The previous prime is 12221211121109. The next prime is 12221211121123. The reversal of 12221211121112 is 21112111212221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628622464 + ... + 1628629967.

It is an arithmetic number, because the mean of its divisors is an integer number (830599370160).

Almost surely, 2^{12221211121112} is an apocalyptic number.

It is an amenable number.

12221211121112 is an abundant number, since it is smaller than the sum of its proper divisors (14357968724008).

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

12221211121112 is a wasteful number, since it uses less digits than its factorization.

12221211121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257252511 (or 3257252507 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 12221211121112 its reverse (21112111212221), we get a palindrome (33333322333333).

The spelling of 12221211121112 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twelve".