222151605215 has 4 divisors (see below), whose sum is σ = 266581926264. Its totient is φ = 177721284168.

The previous prime is 222151605187. The next prime is 222151605257. The reversal of 222151605215 is 512506151222.

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 222151605215 - 2¹⁴ = 222151588831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22215160517 + ... + 22215160526.

It is an arithmetic number, because the mean of its divisors is an integer number (66645481566).

Almost surely, 2^222151605215 is an apocalyptic number.

222151605215 is a deficient number, since it is larger than the sum of its proper divisors (44430321049).

222151605215 is an equidigital number, since it uses as much as digits as its factorization.

222151605215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44430321048.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 222151605215 its reverse (512506151222), we get a palindrome (734657756437).

The spelling of 222151605215 in words is "two hundred twenty-two billion, one hundred fifty-one million, six hundred five thousand, two hundred fifteen".