22120212313 has 4 divisors (see below), whose sum is σ = 22145321268. Its totient is φ = 22095103360.

The previous prime is 22120212251. The next prime is 22120212407. The reversal of 22120212313 is 31321202122.

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 5155670809 + 16964541504 = 71803^2 + 130248^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120212313 - 2²¹ = 22118115161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120212013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12553156 + ... + 12554917.

It is an arithmetic number, because the mean of its divisors is an integer number (5536330317).

Almost surely, 2^22120212313 is an apocalyptic number.

It is an amenable number.

22120212313 is a deficient number, since it is larger than the sum of its proper divisors (25108955).

22120212313 is an equidigital number, since it uses as much as digits as its factorization.

22120212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25108954.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22120212313 its reverse (31321202122), we get a palindrome (53441414435).

The spelling of 22120212313 in words is "twenty-two billion, one hundred twenty million, two hundred twelve thousand, three hundred thirteen".