33334921 has 2 divisors, whose sum is σ = 33334922. Its totient is φ = 33334920.

The previous prime is 33334913. The next prime is 33334957. The reversal of 33334921 is 12943333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 4862025 = 5336^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 33334921 - 2³ = 33334913 is a prime.

It is a super-2 number, since 2×33334921² = 2222433916152482, 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 33334921.

It is not a weakly prime, because it can be changed into another prime (33334901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16667460 + 16667461.

It is an arithmetic number, because the mean of its divisors is an integer number (16667461).

Almost surely, 2^33334921 is an apocalyptic number.

It is an amenable number.

33334921 is a deficient number, since it is larger than the sum of its proper divisors (1).

33334921 is an equidigital number, since it uses as much as digits as its factorization.

33334921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 28.

The square root of 33334921 is about 5773.6401862257. The cubic root of 33334921 is about 321.8349043718.

The spelling of 33334921 in words is "thirty-three million, three hundred thirty-four thousand, nine hundred twenty-one".