221133322121 has 8 divisors (see below), whose sum is σ = 221631277824. Its totient is φ = 220635455040.

The previous prime is 221133322117. The next prime is 221133322127. The reversal of 221133322121 is 121223331122.

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 221133322121 - 2² = 221133322117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221133322127) 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, 9330116 + ... + 9353786.

It is an arithmetic number, because the mean of its divisors is an integer number (27703909728).

Almost surely, 2^221133322121 is an apocalyptic number.

It is an amenable number.

221133322121 is a deficient number, since it is larger than the sum of its proper divisors (497955703).

221133322121 is a wasteful number, since it uses less digits than its factorization.

221133322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44311.

The product of its digits is 864, while the sum is 23.

Adding to 221133322121 its reverse (121223331122), we get a palindrome (342356653243).

Subtracting from 221133322121 its reverse (121223331122), we obtain a palindrome (99909990999).

The spelling of 221133322121 in words is "two hundred twenty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, one hundred twenty-one".