22217000537 has 4 divisors (see below), whose sum is σ = 22420826340. Its totient is φ = 22013174736.

The previous prime is 22217000527. The next prime is 22217000549. The reversal of 22217000537 is 73500071222.

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 15251262016 + 6965738521 = 123496^2 + 83461^2 .

It is a cyclic number.

It is not a de Polignac number, because 22217000537 - 2⁴ = 22217000521 is a prime.

It is a super-2 number, since 2×22217000537² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22217000527) 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, 101912738 + ... + 101912955.

It is an arithmetic number, because the mean of its divisors is an integer number (5605206585).

Almost surely, 2^22217000537 is an apocalyptic number.

It is an amenable number.

22217000537 is a deficient number, since it is larger than the sum of its proper divisors (203825803).

22217000537 is a wasteful number, since it uses less digits than its factorization.

22217000537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203825802.

The product of its (nonzero) digits is 5880, while the sum is 29.

Adding to 22217000537 its reverse (73500071222), we get a palindrome (95717071759).

The spelling of 22217000537 in words is "twenty-two billion, two hundred seventeen million, five hundred thirty-seven", and thus it is an aban number.