22153423213 has 4 divisors (see below), whose sum is σ = 22158438588. Its totient is φ = 22148407840.

The previous prime is 22153423157. The next prime is 22153423247. The reversal of 22153423213 is 31232435122.

It is a happy number.

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 9158107204 + 12995316009 = 95698^2 + 113997^2 .

It is a cyclic number.

It is not a de Polignac number, because 22153423213 - 2⁹ = 22153422701 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 (22153423283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501056 + ... + 2509897.

It is an arithmetic number, because the mean of its divisors is an integer number (5539609647).

Almost surely, 2^22153423213 is an apocalyptic number.

It is an amenable number.

22153423213 is a deficient number, since it is larger than the sum of its proper divisors (5015375).

22153423213 is an equidigital number, since it uses as much as digits as its factorization.

22153423213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015374.

The product of its digits is 8640, while the sum is 28.

Adding to 22153423213 its reverse (31232435122), we get a palindrome (53385858335).

The spelling of 22153423213 in words is "twenty-two billion, one hundred fifty-three million, four hundred twenty-three thousand, two hundred thirteen".