2123221220112 has 20 divisors (see below), whose sum is σ = 5484988152080. Its totient is φ = 707740406688.

The previous prime is 2123221220101. The next prime is 2123221220129. The reversal of 2123221220112 is 2110221223212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22116887662 + ... + 22116887757.

It is an arithmetic number, because the mean of its divisors is an integer number (274249407604).

Almost surely, 2^{2123221220112} is an apocalyptic number.

It is an amenable number.

2123221220112 is an abundant number, since it is smaller than the sum of its proper divisors (3361766931968).

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

2123221220112 is a wasteful number, since it uses less digits than its factorization.

2123221220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44233775430 (or 44233775424 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2123221220112 its reverse (2110221223212), we get a palindrome (4233442443324).

The spelling of 2123221220112 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twelve".