33121073 has 2 divisors, whose sum is σ = 33121074. Its totient is φ = 33121072.

The previous prime is 33121069. The next prime is 33121087. The reversal of 33121073 is 37012133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22771984 + 10349089 = 4772^2 + 3217^2 .

It is a cyclic number.

It is not a de Polignac number, because 33121073 - 2² = 33121069 is a prime.

It is not a weakly prime, because it can be changed into another prime (33121063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16560536 + 16560537.

It is an arithmetic number, because the mean of its divisors is an integer number (16560537).

Almost surely, 2^33121073 is an apocalyptic number.

It is an amenable number.

33121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

33121073 is an equidigital number, since it uses as much as digits as its factorization.

33121073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 33121073 is about 5755.0910505395. The cubic root of 33121073 is about 321.1452227353.

The spelling of 33121073 in words is "thirty-three million, one hundred twenty-one thousand, seventy-three".