1221112210112 has 14 divisors (see below), whose sum is σ = 2423144542068. Its totient is φ = 610556105024.

The previous prime is 1221112210099. The next prime is 1221112210169. The reversal of 1221112210112 is 2110122111221.

It is a super-2 number, since 2×1221112210112² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9539939078 + ... + 9539939205.

Almost surely, 2^{1221112210112} is an apocalyptic number.

It is an amenable number.

1221112210112 is a deficient number, since it is larger than the sum of its proper divisors (1202032331956).

1221112210112 is an equidigital number, since it uses as much as digits as its factorization.

1221112210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19079878295 (or 19079878285 counting only the distinct ones).

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

Adding to 1221112210112 its reverse (2110122111221), we get a palindrome (3331234321333).

The spelling of 1221112210112 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, one hundred twelve".