1220122021112 has 8 divisors (see below), whose sum is σ = 2287728789600. Its totient is φ = 610061010552.

The previous prime is 1220122021109. The next prime is 1220122021123. The reversal of 1220122021112 is 2111202210221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76257626312 + ... + 76257626327.

It is an arithmetic number, because the mean of its divisors is an integer number (285966098700).

Almost surely, 2^{1220122021112} is an apocalyptic number.

It is an amenable number.

1220122021112 is a deficient number, since it is larger than the sum of its proper divisors (1067606768488).

1220122021112 is a wasteful number, since it uses less digits than its factorization.

1220122021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152515252645 (or 152515252641 counting only the distinct ones).

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

Adding to 1220122021112 its reverse (2111202210221), we get a palindrome (3331324231333).

The spelling of 1220122021112 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, twenty-one thousand, one hundred twelve".