1220220012112 has 20 divisors (see below), whose sum is σ = 2419157118400. Its totient is φ = 595921400928.

The previous prime is 1220220012097. The next prime is 1220220012127. The reversal of 1220220012112 is 2112100220221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220220012097) and next prime (1220220012127).

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886787112 + ... + 886788487.

It is an arithmetic number, because the mean of its divisors is an integer number (120957855920).

Almost surely, 2^{1220220012112} is an apocalyptic number.

It is an amenable number.

1220220012112 is a deficient number, since it is larger than the sum of its proper divisors (1198937106288).

1220220012112 is a wasteful number, since it uses less digits than its factorization.

1220220012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773575650 (or 1773575644 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220220012112 its reverse (2112100220221), we get a palindrome (3332320232333).

The spelling of 1220220012112 in words is "one trillion, two hundred twenty billion, two hundred twenty million, twelve thousand, one hundred twelve".