23251221422 has 64 divisors (see below), whose sum is σ = 41543409600. Its totient is φ = 9621089280.

The previous prime is 23251221403. The next prime is 23251221437. The reversal of 23251221422 is 22412215232.

It is a super-2 number, since 2×23251221422² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 23251221391 and 23251221400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7137218 + ... + 7140474.

It is an arithmetic number, because the mean of its divisors is an integer number (649115775).

Almost surely, 2^23251221422 is an apocalyptic number.

23251221422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23251221422 is a deficient number, since it is larger than the sum of its proper divisors (18292188178).

23251221422 is a wasteful number, since it uses less digits than its factorization.

23251221422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621.

The product of its digits is 3840, while the sum is 26.

Adding to 23251221422 its reverse (22412215232), we get a palindrome (45663436654).

The spelling of 23251221422 in words is "twenty-three billion, two hundred fifty-one million, two hundred twenty-one thousand, four hundred twenty-two".