22125213 has 24 divisors (see below), whose sum is σ = 35171136. Its totient is φ = 13401960.

The previous prime is 22125197. The next prime is 22125217. The reversal of 22125213 is 31252122.

It is not a de Polignac number, because 22125213 - 2⁴ = 22125197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22125217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11056 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (1465464).

Almost surely, 2^22125213 is an apocalyptic number.

It is an amenable number.

22125213 is a deficient number, since it is larger than the sum of its proper divisors (13045923).

22125213 is a wasteful number, since it uses less digits than its factorization.

22125213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1861 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 22125213 is about 4703.7445721467. The cubic root of 22125213 is about 280.7345212825.

Adding to 22125213 its reverse (31252122), we get a palindrome (53377335).

The spelling of 22125213 in words is "twenty-two million, one hundred twenty-five thousand, two hundred thirteen".