22501214215 has 4 divisors (see below), whose sum is σ = 27001457064. Its totient is φ = 18000971368.

The previous prime is 22501214213. The next prime is 22501214269. The reversal of 22501214215 is 51241210522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22501214215 - 2¹ = 22501214213 is a prime.

It is a super-2 number, since 2×22501214215² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22501214215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22501214213) 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, 2250121417 + ... + 2250121426.

It is an arithmetic number, because the mean of its divisors is an integer number (6750364266).

Almost surely, 2^22501214215 is an apocalyptic number.

22501214215 is a deficient number, since it is larger than the sum of its proper divisors (4500242849).

22501214215 is an equidigital number, since it uses as much as digits as its factorization.

22501214215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500242848.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 22501214215 its reverse (51241210522), we get a palindrome (73742424737).

The spelling of 22501214215 in words is "twenty-two billion, five hundred one million, two hundred fourteen thousand, two hundred fifteen".