33000300021 has 32 divisors (see below), whose sum is σ = 49213624320. Its totient is φ = 19538852544.

The previous prime is 33000300007. The next prime is 33000300041. The reversal of 33000300021 is 12000300033.

It is a happy number.

It is not a de Polignac number, because 33000300021 - 2²⁶ = 32933191157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33000300041) 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, 44425 + ... + 260718.

It is an arithmetic number, because the mean of its divisors is an integer number (1537925760).

Almost surely, 2^33000300021 is an apocalyptic number.

It is an amenable number.

33000300021 is a deficient number, since it is larger than the sum of its proper divisors (16213324299).

33000300021 is a wasteful number, since it uses less digits than its factorization.

33000300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305265.

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 33000300021 its sum of digits (12), we get a palindrome (33000300033).

Adding to 33000300021 its reverse (12000300033), we get a palindrome (45000600054).

The spelling of 33000300021 in words is "thirty-three billion, three hundred thousand, twenty-one".