22736321421 has 16 divisors (see below), whose sum is σ = 33076512768. Its totient is φ = 13777297200.

The previous prime is 22736321383. The next prime is 22736321437. The reversal of 22736321421 is 12412363722.

It is not a de Polignac number, because 22736321421 - 2²⁹ = 22199450509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22736321471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156006 + ... + 264216.

It is an arithmetic number, because the mean of its divisors is an integer number (2067282048).

Almost surely, 2^22736321421 is an apocalyptic number.

It is an amenable number.

22736321421 is a deficient number, since it is larger than the sum of its proper divisors (10340191347).

22736321421 is a wasteful number, since it uses less digits than its factorization.

22736321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114592.

The product of its digits is 24192, while the sum is 33.

The spelling of 22736321421 in words is "twenty-two billion, seven hundred thirty-six million, three hundred twenty-one thousand, four hundred twenty-one".