222121150217255 has 16 divisors (see below), whose sum is σ = 275149144353024. Its totient is φ = 171961307696640.

The previous prime is 222121150217251. The next prime is 222121150217293. The reversal of 222121150217255 is 552712051121222.

It is not a de Polignac number, because 222121150217255 - 2² = 222121150217251 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 (222121150217251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6634802 + ... + 22096671.

It is an arithmetic number, because the mean of its divisors is an integer number (17196821522064).

Almost surely, 2^{222121150217255} is an apocalyptic number.

222121150217255 is a deficient number, since it is larger than the sum of its proper divisors (53027994135769).

222121150217255 is a wasteful number, since it uses less digits than its factorization.

222121150217255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28781386.

The product of its (nonzero) digits is 56000, while the sum is 38.

The spelling of 222121150217255 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred fifty million, two hundred seventeen thousand, two hundred fifty-five".