22222321213 has 4 divisors (see below), whose sum is σ = 22223588220. Its totient is φ = 22221054208.

The previous prime is 22222321183. The next prime is 22222321229. The reversal of 22222321213 is 31212322222.

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 19862110489 + 2360210724 = 140933^2 + 48582^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222321213 - 2¹⁷ = 22222190141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222321243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606820 + ... + 642397.

It is an arithmetic number, because the mean of its divisors is an integer number (5555897055).

Almost surely, 2^22222321213 is an apocalyptic number.

It is an amenable number.

22222321213 is a deficient number, since it is larger than the sum of its proper divisors (1267007).

22222321213 is a wasteful number, since it uses less digits than its factorization.

22222321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267006.

The product of its digits is 1152, while the sum is 22.

Adding to 22222321213 its reverse (31212322222), we get a palindrome (53434643435).

The spelling of 22222321213 in words is "twenty-two billion, two hundred twenty-two million, three hundred twenty-one thousand, two hundred thirteen".