33198121 has 16 divisors (see below), whose sum is σ = 37313280. Its totient is φ = 29278080.

The previous prime is 33198103. The next prime is 33198133. The reversal of 33198121 is 12189133.

It is a cyclic number.

It is not a de Polignac number, because 33198121 - 2²¹ = 31100969 is a prime.

It is a super-2 number, since 2×33198121² = 2204230475861282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33198121.

It is not an unprimeable number, because it can be changed into a prime (33198101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80965 + ... + 81373.

It is an arithmetic number, because the mean of its divisors is an integer number (2332080).

Almost surely, 2^33198121 is an apocalyptic number.

It is an amenable number.

33198121 is a deficient number, since it is larger than the sum of its proper divisors (4115159).

33198121 is a wasteful number, since it uses less digits than its factorization.

33198121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its digits is 1296, while the sum is 28.

The square root of 33198121 is about 5761.7810614427. The cubic root of 33198121 is about 321.3940515827.

The spelling of 33198121 in words is "thirty-three million, one hundred ninety-eight thousand, one hundred twenty-one".