1220022112112 has 20 divisors (see below), whose sum is σ = 2371344905760. Its totient is φ = 608062136448.

The previous prime is 1220022112069. The next prime is 1220022112151. The reversal of 1220022112112 is 2112112200221.

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, 121802312 + ... + 121812327.

It is an arithmetic number, because the mean of its divisors is an integer number (118567245288).

Almost surely, 2^{1220022112112} is an apocalyptic number.

It is an amenable number.

1220022112112 is a deficient number, since it is larger than the sum of its proper divisors (1151322793648).

1220022112112 is a wasteful number, since it uses less digits than its factorization.

1220022112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243614960 (or 243614954 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220022112112 its reverse (2112112200221), we get a palindrome (3332134312333).

The spelling of 1220022112112 in words is "one trillion, two hundred twenty billion, twenty-two million, one hundred twelve thousand, one hundred twelve".