22135723 has 2 divisors, whose sum is σ = 22135724. Its totient is φ = 22135722.

The previous prime is 22135693. The next prime is 22135739. The reversal of 22135723 is 32753122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22135723 is a prime.

It is not a weakly prime, because it can be changed into another prime (22135423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11067861 + 11067862.

It is an arithmetic number, because the mean of its divisors is an integer number (11067862).

Almost surely, 2^22135723 is an apocalyptic number.

22135723 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135723 is an equidigital number, since it uses as much as digits as its factorization.

22135723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 22135723 is about 4704.8616345223. The cubic root of 22135723 is about 280.7789660938.

Adding to 22135723 its reverse (32753122), we get a palindrome (54888845).

The spelling of 22135723 in words is "twenty-two million, one hundred thirty-five thousand, seven hundred twenty-three".