1222121110112 has 48 divisors (see below), whose sum is σ = 2750113552032. Its totient is φ = 523701227520.

The previous prime is 1222121110081. The next prime is 1222121110141. The reversal of 1222121110112 is 2110111212221.

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, 1493798 + ... + 2162330.

It is an arithmetic number, because the mean of its divisors is an integer number (57294032334).

Almost surely, 2^{1222121110112} is an apocalyptic number.

It is an amenable number.

1222121110112 is an abundant number, since it is smaller than the sum of its proper divisors (1527992441920).

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

1222121110112 is an equidigital number, since it uses as much as digits as its factorization.

1222121110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676711 (or 676703 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222121110112 its reverse (2110111212221), we get a palindrome (3332232322333).

The spelling of 1222121110112 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred ten thousand, one hundred twelve".