22140042231 has 4 divisors (see below), whose sum is σ = 29520056312. Its totient is φ = 14760028152.

The previous prime is 22140042173. The next prime is 22140042233. The reversal of 22140042231 is 13224004122.

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

It is not a de Polignac number, because 22140042231 - 2⁷ = 22140042103 is a prime.

It is a super-2 number, since 2×22140042231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22140042198 and 22140042207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140042233) 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, 3690007036 + ... + 3690007041.

It is an arithmetic number, because the mean of its divisors is an integer number (7380014078).

Almost surely, 2^22140042231 is an apocalyptic number.

22140042231 is a deficient number, since it is larger than the sum of its proper divisors (7380014081).

22140042231 is an equidigital number, since it uses as much as digits as its factorization.

22140042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380014080.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22140042231 its reverse (13224004122), we get a palindrome (35364046353).

The spelling of 22140042231 in words is "twenty-two billion, one hundred forty million, forty-two thousand, two hundred thirty-one".