33001230021 has 16 divisors (see below), whose sum is σ = 45572155200. Its totient is φ = 21217336448.

The previous prime is 33001230011. The next prime is 33001230029. The reversal of 33001230021 is 12003210033.

It is a cyclic number.

It is not a de Polignac number, because 33001230021 - 2²¹ = 32999132869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33001230029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146751 + ... + 295868.

It is an arithmetic number, because the mean of its divisors is an integer number (2848259700).

Almost surely, 2^33001230021 is an apocalyptic number.

It is an amenable number.

33001230021 is a deficient number, since it is larger than the sum of its proper divisors (12570925179).

33001230021 is a wasteful number, since it uses less digits than its factorization.

33001230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443508.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 33001230021 its reverse (12003210033), we get a palindrome (45004440054).

It can be divided in two parts, 3300 and 1230021, that added together give a palindrome (1233321).

The spelling of 33001230021 in words is "thirty-three billion, one million, two hundred thirty thousand, twenty-one".