33401121 has 32 divisors (see below), whose sum is σ = 50050560. Its totient is φ = 19678464.

The previous prime is 33401117. The next prime is 33401131. The reversal of 33401121 is 12110433.

It is not a de Polignac number, because 33401121 - 2² = 33401117 is a prime.

It is a super-2 number, since 2×33401121² = 2231269768113282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33401121.

It is not an unprimeable number, because it can be changed into a prime (33401131) 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, 113851 + ... + 114143.

It is an arithmetic number, because the mean of its divisors is an integer number (1564080).

Almost surely, 2^33401121 is an apocalyptic number.

It is an amenable number.

33401121 is a deficient number, since it is larger than the sum of its proper divisors (16649439).

33401121 is a wasteful number, since it uses less digits than its factorization.

33401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 33401121 is about 5779.3702944179. The cubic root of 33401121 is about 322.0478080578.

Adding to 33401121 its reverse (12110433), we get a palindrome (45511554).

The spelling of 33401121 in words is "thirty-three million, four hundred one thousand, one hundred twenty-one".