22001213233 has 4 divisors (see below), whose sum is σ = 22001661040. Its totient is φ = 22000765428.

The previous prime is 22001213231. The next prime is 22001213251. The reversal of 22001213233 is 33231210022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22001213233 - 2¹ = 22001213231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22001213233.

It is not an unprimeable number, because it can be changed into a prime (22001213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139635 + ... + 251992.

It is an arithmetic number, because the mean of its divisors is an integer number (5500415260).

Almost surely, 2^22001213233 is an apocalyptic number.

It is an amenable number.

22001213233 is a deficient number, since it is larger than the sum of its proper divisors (447807).

22001213233 is an equidigital number, since it uses as much as digits as its factorization.

22001213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447806.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22001213233 its reverse (33231210022), we get a palindrome (55232423255).

The spelling of 22001213233 in words is "twenty-two billion, one million, two hundred thirteen thousand, two hundred thirty-three".