33400121 has 8 divisors (see below), whose sum is σ = 36188064. Its totient is φ = 30703680.

The previous prime is 33400093. The next prime is 33400139. The reversal of 33400121 is 12100433.

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 33400121 - 2⁶ = 33400057 is a prime.

It is a super-2 number, since 2×33400121² = 2231136165629282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33400096 and 33400105.

It is not an unprimeable number, because it can be changed into a prime (33400151) 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, 22115 + ... + 23576.

It is an arithmetic number, because the mean of its divisors is an integer number (4523508).

Almost surely, 2^33400121 is an apocalyptic number.

It is an amenable number.

33400121 is a deficient number, since it is larger than the sum of its proper divisors (2787943).

33400121 is a wasteful number, since it uses less digits than its factorization.

33400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45751.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 33400121 is about 5779.2837791546. The cubic root of 33400121 is about 322.0445940836.

Adding to 33400121 its reverse (12100433), we get a palindrome (45500554).

The spelling of 33400121 in words is "thirty-three million, four hundred thousand, one hundred twenty-one".