20113222129 has 24 divisors (see below), whose sum is σ = 27487410048. Its totient is φ = 14467047840.

The previous prime is 20113222117. The next prime is 20113222147. The reversal of 20113222129 is 92122231102.

It is not a de Polignac number, because 20113222129 - 2⁵ = 20113222097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20113225129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1428217 + ... + 1442230.

It is an arithmetic number, because the mean of its divisors is an integer number (1145308752).

Almost surely, 2^20113222129 is an apocalyptic number.

It is an amenable number.

20113222129 is a deficient number, since it is larger than the sum of its proper divisors (7374187919).

20113222129 is a wasteful number, since it uses less digits than its factorization.

20113222129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870485 (or 2870478 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

It can be divided in two parts, 20113 and 222129, that added together give a palindrome (242242).

The spelling of 20113222129 in words is "twenty billion, one hundred thirteen million, two hundred twenty-two thousand, one hundred twenty-nine".