222551220215 has 16 divisors (see below), whose sum is σ = 272938982400. Its totient is φ = 174128057760.

The previous prime is 222551220211. The next prime is 222551220257. The reversal of 222551220215 is 512022155222.

It is not a de Polignac number, because 222551220215 - 2² = 222551220211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222551220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9701 + ... + 667230.

It is an arithmetic number, because the mean of its divisors is an integer number (17058686400).

Almost surely, 2^222551220215 is an apocalyptic number.

222551220215 is a deficient number, since it is larger than the sum of its proper divisors (50387762185).

222551220215 is a wasteful number, since it uses less digits than its factorization.

222551220215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678382.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 222551220215 its reverse (512022155222), we get a palindrome (734573375437).

The spelling of 222551220215 in words is "two hundred twenty-two billion, five hundred fifty-one million, two hundred twenty thousand, two hundred fifteen".