22231454215 has 4 divisors (see below), whose sum is σ = 26677745064. Its totient is φ = 17785163368.

The previous prime is 22231454213. The next prime is 22231454221. The reversal of 22231454215 is 51245413222.

It is a happy number.

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 22231454215 - 2¹ = 22231454213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231454213) 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, 2223145417 + ... + 2223145426.

It is an arithmetic number, because the mean of its divisors is an integer number (6669436266).

Almost surely, 2^22231454215 is an apocalyptic number.

22231454215 is a deficient number, since it is larger than the sum of its proper divisors (4446290849).

22231454215 is an equidigital number, since it uses as much as digits as its factorization.

22231454215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446290848.

The product of its digits is 19200, while the sum is 31.

Adding to 22231454215 its reverse (51245413222), we get a palindrome (73476867437).

The spelling of 22231454215 in words is "twenty-two billion, two hundred thirty-one million, four hundred fifty-four thousand, two hundred fifteen".