222155232330321 has 12 divisors (see below), whose sum is σ = 320893734844020. Its totient is φ = 148102175743200.

The previous prime is 222155232330257. The next prime is 222155232330403. The reversal of 222155232330321 is 123033232551222.

222155232330321 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 5 + 5 + 2 + 323 + 3 + 0 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 215264796329025 + 6890436001296 = 14671905^2 + 2624964^2 .

It is not a de Polignac number, because 222155232330321 - 2⁶ = 222155232330257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222155232330821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108300526 + ... + 110332743.

It is an arithmetic number, because the mean of its divisors is an integer number (26741144570335).

Almost surely, 2^{222155232330321} is an apocalyptic number.

It is an amenable number.

222155232330321 is a deficient number, since it is larger than the sum of its proper divisors (98738502513699).

222155232330321 is a wasteful number, since it uses less digits than its factorization.

222155232330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218746176 (or 218746173 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 222155232330321 its reverse (123033232551222), we get a palindrome (345188464881543).

The spelling of 222155232330321 in words is "two hundred twenty-two trillion, one hundred fifty-five billion, two hundred thirty-two million, three hundred thirty thousand, three hundred twenty-one".