22131140321243 has 4 divisors (see below), whose sum is σ = 22182251500248. Its totient is φ = 22080029142240.

The previous prime is 22131140321189. The next prime is 22131140321263. The reversal of 22131140321243 is 34212304113122.

It is a happy number.

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 22131140321243 - 2⁶ = 22131140321179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22131140321263) 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, 25555588853 + ... + 25555589718.

It is an arithmetic number, because the mean of its divisors is an integer number (5545562875062).

Almost surely, 2^{22131140321243} is an apocalyptic number.

22131140321243 is a deficient number, since it is larger than the sum of its proper divisors (51111179005).

22131140321243 is an equidigital number, since it uses as much as digits as its factorization.

22131140321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51111179004.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 22131140321243 its reverse (34212304113122), we get a palindrome (56343444434365).

The spelling of 22131140321243 in words is "twenty-two trillion, one hundred thirty-one billion, one hundred forty million, three hundred twenty-one thousand, two hundred forty-three".