22131312233 has 16 divisors (see below), whose sum is σ = 24024729600. Its totient is φ = 20320770960.

The previous prime is 22131312193. The next prime is 22131312239. The reversal of 22131312233 is 33221313122.

It is a cyclic number.

It is not a de Polignac number, because 22131312233 - 2⁶ = 22131312169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131312199 and 22131312208.

It is not an unprimeable number, because it can be changed into a prime (22131312239) 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, 59441 + ... + 218622.

It is an arithmetic number, because the mean of its divisors is an integer number (1501545600).

Almost surely, 2^22131312233 is an apocalyptic number.

It is an amenable number.

22131312233 is a deficient number, since it is larger than the sum of its proper divisors (1893417367).

22131312233 is a wasteful number, since it uses less digits than its factorization.

22131312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278212.

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

Adding to 22131312233 its reverse (33221313122), we get a palindrome (55352625355).

The spelling of 22131312233 in words is "twenty-two billion, one hundred thirty-one million, three hundred twelve thousand, two hundred thirty-three".