22240442131 has 4 divisors (see below), whose sum is σ = 22241210200. Its totient is φ = 22239674064.

The previous prime is 22240442101. The next prime is 22240442141. The reversal of 22240442131 is 13124404222.

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 22240442131 - 2²¹ = 22238344979 is a prime.

It is a super-2 number, since 2×22240442131² (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 = 22240442096 and 22240442105.

It is not an unprimeable number, because it can be changed into a prime (22240442101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338826 + ... + 399103.

It is an arithmetic number, because the mean of its divisors is an integer number (5560302550).

Almost surely, 2^22240442131 is an apocalyptic number.

22240442131 is a deficient number, since it is larger than the sum of its proper divisors (768069).

22240442131 is an equidigital number, since it uses as much as digits as its factorization.

22240442131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768068.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 22240442131 its reverse (13124404222), we get a palindrome (35364846353).

The spelling of 22240442131 in words is "twenty-two billion, two hundred forty million, four hundred forty-two thousand, one hundred thirty-one".