20333001021 has 8 divisors (see below), whose sum is σ = 27687490944. Its totient is φ = 13266922560.

The previous prime is 20333000959. The next prime is 20333001023. The reversal of 20333001021 is 12010033302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20333001021 - 2⁶ = 20333000957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20333001023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72102700 + ... + 72102981.

It is an arithmetic number, because the mean of its divisors is an integer number (3460936368).

Almost surely, 2^20333001021 is an apocalyptic number.

It is an amenable number.

20333001021 is a deficient number, since it is larger than the sum of its proper divisors (7354489923).

20333001021 is a wasteful number, since it uses less digits than its factorization.

20333001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144205731.

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

Adding to 20333001021 its reverse (12010033302), we get a palindrome (32343034323).

The spelling of 20333001021 in words is "twenty billion, three hundred thirty-three million, one thousand, twenty-one".