22126513 has 4 divisors (see below), whose sum is σ = 22154608. Its totient is φ = 22098420.

The previous prime is 22126501. The next prime is 22126541. The reversal of 22126513 is 31562122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31562122 = 2 ⋅15781061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22126513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22126543) 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, 12831 + ... + 14452.

It is an arithmetic number, because the mean of its divisors is an integer number (5538652).

Almost surely, 2^22126513 is an apocalyptic number.

It is an amenable number.

22126513 is a deficient number, since it is larger than the sum of its proper divisors (28095).

22126513 is an equidigital number, since it uses as much as digits as its factorization.

22126513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28094.

The product of its digits is 720, while the sum is 22.

The square root of 22126513 is about 4703.8827578927. The cubic root of 22126513 is about 280.7400195004.

Adding to 22126513 its reverse (31562122), we get a palindrome (53688635).

The spelling of 22126513 in words is "twenty-two million, one hundred twenty-six thousand, five hundred thirteen".