33213001 has 4 divisors (see below), whose sum is σ = 33224832. Its totient is φ = 33201172.

The previous prime is 33212999. The next prime is 33213017. The reversal of 33213001 is 10031233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 33213001 - 2¹ = 33212999 is a prime.

It is a super-2 number, since 2×33213001² = 2206206870852002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33211001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960 + ... + 8206.

It is an arithmetic number, because the mean of its divisors is an integer number (8306208).

Almost surely, 2^33213001 is an apocalyptic number.

It is an amenable number.

33213001 is a deficient number, since it is larger than the sum of its proper divisors (11831).

33213001 is an equidigital number, since it uses as much as digits as its factorization.

33213001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 33213001 is about 5763.0721841740. The cubic root of 33213001 is about 321.4420626248.

Adding to 33213001 its reverse (10031233), we get a palindrome (43244234).

The spelling of 33213001 in words is "thirty-three million, two hundred thirteen thousand, one".