22131031100243 has 6 divisors (see below), whose sum is σ = 23964370954884. Its totient is φ = 20428644092376.

The previous prime is 22131031100177. The next prime is 22131031100267. The reversal of 22131031100243 is 34200113013122.

It is not a de Polignac number, because 22131031100243 - 2¹⁴ = 22131031083859 is a prime.

It is a super-2 number, since 2×22131031100243² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131031100743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65476423205 + ... + 65476423542.

It is an arithmetic number, because the mean of its divisors is an integer number (3994061825814).

Almost surely, 2^{22131031100243} is an apocalyptic number.

22131031100243 is a deficient number, since it is larger than the sum of its proper divisors (1833339854641).

22131031100243 is a wasteful number, since it uses less digits than its factorization.

22131031100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130952846773 (or 130952846760 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22131031100243 its reverse (34200113013122), we get a palindrome (56331144113365).

The spelling of 22131031100243 in words is "twenty-two trillion, one hundred thirty-one billion, thirty-one million, one hundred thousand, two hundred forty-three".