22120203131 has 4 divisors (see below), whose sum is σ = 23821757232. Its totient is φ = 20418649032.

The previous prime is 22120203097. The next prime is 22120203137. The reversal of 22120203131 is 13130202122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22120203131 - 2¹⁰ = 22120202107 is a prime.

It is a super-2 number, since 2×22120203131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22120203137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850777031 + ... + 850777056.

It is an arithmetic number, because the mean of its divisors is an integer number (5955439308).

Almost surely, 2^22120203131 is an apocalyptic number.

22120203131 is a deficient number, since it is larger than the sum of its proper divisors (1701554101).

22120203131 is a wasteful number, since it uses less digits than its factorization.

22120203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701554100.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22120203131 its reverse (13130202122), we get a palindrome (35250405253).

The spelling of 22120203131 in words is "twenty-two billion, one hundred twenty million, two hundred three thousand, one hundred thirty-one".