22312011233 has 4 divisors (see below), whose sum is σ = 23624482500. Its totient is φ = 20999539968.

The previous prime is 22312011223. The next prime is 22312011263. The reversal of 22312011233 is 33211021322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15274982464 + 7037028769 = 123592^2 + 83887^2 .

It is a cyclic number.

It is not a de Polignac number, because 22312011233 - 2⁸ = 22312010977 is a prime.

It is a super-3 number, since 3×22312011233³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22312011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656235608 + ... + 656235641.

It is an arithmetic number, because the mean of its divisors is an integer number (5906120625).

Almost surely, 2^22312011233 is an apocalyptic number.

It is an amenable number.

22312011233 is a deficient number, since it is larger than the sum of its proper divisors (1312471267).

22312011233 is a wasteful number, since it uses less digits than its factorization.

22312011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312471266.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22312011233 its reverse (33211021322), we get a palindrome (55523032555).

The spelling of 22312011233 in words is "twenty-two billion, three hundred twelve million, eleven thousand, two hundred thirty-three".