33221330121 has 24 divisors (see below), whose sum is σ = 54238910880. Its totient is φ = 17984477952.

The previous prime is 33221330101. The next prime is 33221330123. The reversal of 33221330121 is 12103312233.

It is not a de Polignac number, because 33221330121 - 2⁵ = 33221330089 is a prime.

It is a super-2 number, since 2×33221330121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (33221330123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5944456 + ... + 5950041.

It is an arithmetic number, because the mean of its divisors is an integer number (2259954620).

Almost surely, 2^33221330121 is an apocalyptic number.

It is an amenable number.

33221330121 is a deficient number, since it is larger than the sum of its proper divisors (21017580759).

33221330121 is a wasteful number, since it uses less digits than its factorization.

33221330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894533 (or 11894526 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 33221330121 its reverse (12103312233), we get a palindrome (45324642354).

The spelling of 33221330121 in words is "thirty-three billion, two hundred twenty-one million, three hundred thirty thousand, one hundred twenty-one".