22133213231 has 4 divisors (see below), whose sum is σ = 22134415464. Its totient is φ = 22132011000.

The previous prime is 22133213203. The next prime is 22133213243. The reversal of 22133213231 is 13231233122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22133213231 is a prime.

It is a super-2 number, since 2×22133213231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22133213197 and 22133213206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22133213281) 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, 573065 + ... + 610466.

It is an arithmetic number, because the mean of its divisors is an integer number (5533603866).

Almost surely, 2^22133213231 is an apocalyptic number.

22133213231 is a deficient number, since it is larger than the sum of its proper divisors (1202233).

22133213231 is a wasteful number, since it uses less digits than its factorization.

22133213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202232.

The product of its digits is 1296, while the sum is 23.

Adding to 22133213231 its reverse (13231233122), we get a palindrome (35364446353).

The spelling of 22133213231 in words is "twenty-two billion, one hundred thirty-three million, two hundred thirteen thousand, two hundred thirty-one".