20122031121 has 16 divisors (see below), whose sum is σ = 27053334528. Its totient is φ = 13302853200.

The previous prime is 20122031107. The next prime is 20122031173. The reversal of 20122031121 is 12113022102.

It is not a de Polignac number, because 20122031121 - 2¹⁵ = 20121998353 is a prime.

It is a super-2 number, since 2×20122031121² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20122031121.

It is not an unprimeable number, because it can be changed into a prime (20122031621) 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, 560700 + ... + 595506.

It is an arithmetic number, because the mean of its divisors is an integer number (1690833408).

Almost surely, 2^20122031121 is an apocalyptic number.

It is an amenable number.

20122031121 is a deficient number, since it is larger than the sum of its proper divisors (6931303407).

20122031121 is a wasteful number, since it uses less digits than its factorization.

20122031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36412.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20122031121 its reverse (12113022102), we get a palindrome (32235053223).

The spelling of 20122031121 in words is "twenty billion, one hundred twenty-two million, thirty-one thousand, one hundred twenty-one".