22236413723 has 4 divisors (see below), whose sum is σ = 23003186640. Its totient is φ = 21469640808.

The previous prime is 22236413699. The next prime is 22236413741. The reversal of 22236413723 is 32731463222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32731463222 = 2 ⋅16365731611.

It is a cyclic number.

It is not a de Polignac number, because 22236413723 - 2⁸ = 22236413467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22236413783) 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, 383386415 + ... + 383386472.

It is an arithmetic number, because the mean of its divisors is an integer number (5750796660).

Almost surely, 2^22236413723 is an apocalyptic number.

22236413723 is a deficient number, since it is larger than the sum of its proper divisors (766772917).

22236413723 is an equidigital number, since it uses as much as digits as its factorization.

22236413723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766772916.

The product of its digits is 72576, while the sum is 35.

Adding to 22236413723 its reverse (32731463222), we get a palindrome (54967876945).

The spelling of 22236413723 in words is "twenty-two billion, two hundred thirty-six million, four hundred thirteen thousand, seven hundred twenty-three".