22125211513 has 4 divisors (see below), whose sum is σ = 22542668388. Its totient is φ = 21707754640.

The previous prime is 22125211489. The next prime is 22125211609. The reversal of 22125211513 is 31511252122.

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 13776186384 + 8349025129 = 117372^2 + 91373^2 .

It is a cyclic number.

It is not a de Polignac number, because 22125211513 - 2⁵ = 22125211481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125241513) 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, 208728358 + ... + 208728463.

It is an arithmetic number, because the mean of its divisors is an integer number (5635667097).

Almost surely, 2^22125211513 is an apocalyptic number.

It is an amenable number.

22125211513 is a deficient number, since it is larger than the sum of its proper divisors (417456875).

22125211513 is an equidigital number, since it uses as much as digits as its factorization.

22125211513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417456874.

The product of its digits is 1200, while the sum is 25.

Adding to 22125211513 its reverse (31511252122), we get a palindrome (53636463635).

The spelling of 22125211513 in words is "twenty-two billion, one hundred twenty-five million, two hundred eleven thousand, five hundred thirteen".