22151261631 has 8 divisors (see below), whose sum is σ = 29540993584. Its totient is φ = 14764518720.

The previous prime is 22151261623. The next prime is 22151261651. The reversal of 22151261631 is 13616215122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22151261631 - 2³ = 22151261623 is a prime.

It is a super-2 number, since 2×22151261631² (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 (22151261611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729910 + ... + 759651.

It is an arithmetic number, because the mean of its divisors is an integer number (3692624198).

Almost surely, 2^22151261631 is an apocalyptic number.

22151261631 is a deficient number, since it is larger than the sum of its proper divisors (7389731953).

22151261631 is a wasteful number, since it uses less digits than its factorization.

22151261631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494521.

The product of its digits is 4320, while the sum is 30.

Adding to 22151261631 its reverse (13616215122), we get a palindrome (35767476753).

The spelling of 22151261631 in words is "twenty-two billion, one hundred fifty-one million, two hundred sixty-one thousand, six hundred thirty-one".