22240444631 has 4 divisors (see below), whose sum is σ = 22382103672. Its totient is φ = 22098785592.

The previous prime is 22240444627. The next prime is 22240444637. The reversal of 22240444631 is 13644404222.

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 22240444631 - 2² = 22240444627 is a prime.

It is a super-2 number, since 2×22240444631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240444637) 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, 70829285 + ... + 70829598.

It is an arithmetic number, because the mean of its divisors is an integer number (5595525918).

Almost surely, 2^22240444631 is an apocalyptic number.

22240444631 is a deficient number, since it is larger than the sum of its proper divisors (141659041).

22240444631 is a wasteful number, since it uses less digits than its factorization.

22240444631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141659040.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 22240444631 its reverse (13644404222), we get a palindrome (35884848853).

The spelling of 22240444631 in words is "twenty-two billion, two hundred forty million, four hundred forty-four thousand, six hundred thirty-one".