1221002200112 has 40 divisors (see below), whose sum is σ = 2371303289376. Its totient is φ = 609053769216.

The previous prime is 1221002200087. The next prime is 1221002200139. The reversal of 1221002200112 is 2110022001221.

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, 26259188 + ... + 26305644.

Almost surely, 2^{1221002200112} is an apocalyptic number.

It is an amenable number.

1221002200112 is a deficient number, since it is larger than the sum of its proper divisors (1150301089264).

1221002200112 is a wasteful number, since it uses less digits than its factorization.

1221002200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50325 (or 50319 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221002200112 its reverse (2110022001221), we get a palindrome (3331024201333).

The spelling of 1221002200112 in words is "one trillion, two hundred twenty-one billion, two million, two hundred thousand, one hundred twelve".