221033332121 has 32 divisors (see below), whose sum is σ = 279584524800. Its totient is φ = 173963328000.

The previous prime is 221033332099. The next prime is 221033332141. The reversal of 221033332121 is 121233330122.

It is not a de Polignac number, because 221033332121 - 2⁶ = 221033332057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221033332141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223205 + ... + 701346.

It is an arithmetic number, because the mean of its divisors is an integer number (8737016400).

Almost surely, 2^221033332121 is an apocalyptic number.

It is an amenable number.

221033332121 is a deficient number, since it is larger than the sum of its proper divisors (58551192679).

221033332121 is an equidigital number, since it uses as much as digits as its factorization.

221033332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924630 (or 924616 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221033332121 its reverse (121233330122), we get a palindrome (342266662243).

The spelling of 221033332121 in words is "two hundred twenty-one billion, thirty-three million, three hundred thirty-two thousand, one hundred twenty-one".