22553332213 has 4 divisors (see below), whose sum is σ = 22553765388. Its totient is φ = 22552899040.

The previous prime is 22553332201. The next prime is 22553332229. The reversal of 22553332213 is 31223335522.

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: 31223335522 = 2 ⋅15611667761.

It can be written as a sum of positive squares in 2 ways, for example, as 3876556644 + 18676775569 = 62262^2 + 136663^2 .

It is a cyclic number.

It is not a de Polignac number, because 22553332213 - 2³³ = 13963397621 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 (22553332313) 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, 125806 + ... + 246847.

It is an arithmetic number, because the mean of its divisors is an integer number (5638441347).

Almost surely, 2^22553332213 is an apocalyptic number.

It is an amenable number.

22553332213 is a deficient number, since it is larger than the sum of its proper divisors (433175).

22553332213 is an equidigital number, since it uses as much as digits as its factorization.

22553332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433174.

The product of its digits is 32400, while the sum is 31.

Adding to 22553332213 its reverse (31223335522), we get a palindrome (53776667735).

The spelling of 22553332213 in words is "twenty-two billion, five hundred fifty-three million, three hundred thirty-two thousand, two hundred thirteen".