1220221110112 has 24 divisors (see below), whose sum is σ = 2506758586416. Its totient is φ = 583584008832.

The previous prime is 1220221110041. The next prime is 1220221110139. The reversal of 1220221110112 is 2110111220221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828953823 + ... + 828955294.

It is an arithmetic number, because the mean of its divisors is an integer number (104448274434).

Almost surely, 2^{1220221110112} is an apocalyptic number.

It is an amenable number.

1220221110112 is an abundant number, since it is smaller than the sum of its proper divisors (1286537476304).

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

1220221110112 is a wasteful number, since it uses less digits than its factorization.

1220221110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657909150 (or 1657909142 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220221110112 its reverse (2110111220221), we get a palindrome (3330332330333).

The spelling of 1220221110112 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred twelve".