22463236421 has 4 divisors (see below), whose sum is σ = 22985637312. Its totient is φ = 21940835532.

The previous prime is 22463236409. The next prime is 22463236451. The reversal of 22463236421 is 12463236422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22463236421 - 2²² = 22459042117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22463236451) 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, 261200381 + ... + 261200466.

It is an arithmetic number, because the mean of its divisors is an integer number (5746409328).

Almost surely, 2^22463236421 is an apocalyptic number.

It is an amenable number.

22463236421 is a deficient number, since it is larger than the sum of its proper divisors (522400891).

22463236421 is an equidigital number, since it uses as much as digits as its factorization.

22463236421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522400890.

The product of its digits is 82944, while the sum is 35.

Subtracting from 22463236421 its reverse (12463236422), we obtain a palindrome (9999999999).

The spelling of 22463236421 in words is "twenty-two billion, four hundred sixty-three million, two hundred thirty-six thousand, four hundred twenty-one".