22215512455 has 8 divisors (see below), whose sum is σ = 26660061072. Its totient is φ = 17771445888.

The previous prime is 22215512453. The next prime is 22215512483. The reversal of 22215512455 is 55421551222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22215512455 - 2¹ = 22215512453 is a prime.

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 22215512455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215512453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9889 + ... + 211018.

It is an arithmetic number, because the mean of its divisors is an integer number (3332507634).

Almost surely, 2^22215512455 is an apocalyptic number.

22215512455 is a deficient number, since it is larger than the sum of its proper divisors (4444548617).

22215512455 is a wasteful number, since it uses less digits than its factorization.

22215512455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241025.

The product of its digits is 40000, while the sum is 34.

The spelling of 22215512455 in words is "twenty-two billion, two hundred fifteen million, five hundred twelve thousand, four hundred fifty-five".