1220112431121 has 16 divisors (see below), whose sum is σ = 1629651759104. Its totient is φ = 811990952784.

The previous prime is 1220112431101. The next prime is 1220112431141. The reversal of 1220112431121 is 1211342110221.

It is an interprime number because it is at equal distance from previous prime (1220112431101) and next prime (1220112431141).

It is not a de Polignac number, because 1220112431121 - 2³³ = 1211522496529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220112431101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24133956 + ... + 24184458.

It is an arithmetic number, because the mean of its divisors is an integer number (101853234944).

Almost surely, 2^{1220112431121} is an apocalyptic number.

It is an amenable number.

1220112431121 is a deficient number, since it is larger than the sum of its proper divisors (409539327983).

1220112431121 is a wasteful number, since it uses less digits than its factorization.

1220112431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64380.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1220112431121 its reverse (1211342110221), we get a palindrome (2431454541342).

The spelling of 1220112431121 in words is "one trillion, two hundred twenty billion, one hundred twelve million, four hundred thirty-one thousand, one hundred twenty-one".