221312002333121 has 8 divisors (see below), whose sum is σ = 255291815776320. Its totient is φ = 187923142167408.

The previous prime is 221312002333099. The next prime is 221312002333127. The reversal of 221312002333121 is 121333200213122.

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 221312002333121 - 2¹⁸ = 221312002070977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221312002333127) 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, 147738318566 + ... + 147738320063.

It is an arithmetic number, because the mean of its divisors is an integer number (31911476972040).

Almost surely, 2^{221312002333121} is an apocalyptic number.

It is an amenable number.

221312002333121 is a deficient number, since it is larger than the sum of its proper divisors (33979813443199).

221312002333121 is a wasteful number, since it uses less digits than its factorization.

221312002333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295476638743.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 221312002333121 its reverse (121333200213122), we get a palindrome (342645202546243).

The spelling of 221312002333121 in words is "two hundred twenty-one trillion, three hundred twelve billion, two million, three hundred thirty-three thousand, one hundred twenty-one".