22311113213 has 4 divisors (see below), whose sum is σ = 22855286748. Its totient is φ = 21766939680.

The previous prime is 22311113207. The next prime is 22311113221. The reversal of 22311113213 is 31231111322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31231111322 = 2 ⋅15615555661.

It can be written as a sum of positive squares in 2 ways, for example, as 399120484 + 21911992729 = 19978^2 + 148027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22311113213 is a prime.

It is a super-3 number, since 3×22311113213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311113273) 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, 272086706 + ... + 272086787.

It is an arithmetic number, because the mean of its divisors is an integer number (5713821687).

Almost surely, 2^22311113213 is an apocalyptic number.

It is an amenable number.

22311113213 is a deficient number, since it is larger than the sum of its proper divisors (544173535).

22311113213 is an equidigital number, since it uses as much as digits as its factorization.

22311113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544173534.

The product of its digits is 216, while the sum is 20.

Adding to 22311113213 its reverse (31231111322), we get a palindrome (53542224535).

The spelling of 22311113213 in words is "twenty-two billion, three hundred eleven million, one hundred thirteen thousand, two hundred thirteen".