22125122513 has 8 divisors (see below), whose sum is σ = 23848175400. Its totient is φ = 20405086848.

The previous prime is 22125122507. The next prime is 22125122531. The reversal of 22125122513 is 31522152122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 788093329 + 21337029184 = 28073^2 + 146072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22125122513 - 2³⁰ = 21051380689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22125122563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739058 + ... + 768411.

It is an arithmetic number, because the mean of its divisors is an integer number (2981021925).

Almost surely, 2^22125122513 is an apocalyptic number.

It is an amenable number.

22125122513 is a deficient number, since it is larger than the sum of its proper divisors (1723052887).

22125122513 is a wasteful number, since it uses less digits than its factorization.

22125122513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508611.

The product of its digits is 2400, while the sum is 26.

Adding to 22125122513 its reverse (31522152122), we get a palindrome (53647274635).

The spelling of 22125122513 in words is "twenty-two billion, one hundred twenty-five million, one hundred twenty-two thousand, five hundred thirteen".