22331361205 has 4 divisors (see below), whose sum is σ = 26797633452. Its totient is φ = 17865088960.

The previous prime is 22331361203. The next prime is 22331361209. The reversal of 22331361205 is 50216313322.

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 9077135076 + 13254226129 = 95274^2 + 115127^2 .

It is not a de Polignac number, because 22331361205 - 2¹ = 22331361203 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 (22331361203) 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, 2233136116 + ... + 2233136125.

It is an arithmetic number, because the mean of its divisors is an integer number (6699408363).

Almost surely, 2^22331361205 is an apocalyptic number.

It is an amenable number.

22331361205 is a deficient number, since it is larger than the sum of its proper divisors (4466272247).

22331361205 is an equidigital number, since it uses as much as digits as its factorization.

22331361205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466272246.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 22331361205 its reverse (50216313322), we get a palindrome (72547674527).

The spelling of 22331361205 in words is "twenty-two billion, three hundred thirty-one million, three hundred sixty-one thousand, two hundred five".