20330202021 has 32 divisors (see below), whose sum is σ = 29318526720. Its totient is φ = 12492480000.

The previous prime is 20330201993. The next prime is 20330202023. The reversal of 20330202021 is 12020203302.

It is not a de Polignac number, because 20330202021 - 2⁹ = 20330201509 is a prime.

It is a super-2 number, since 2×20330202021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330202023) 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, 1032771 + ... + 1052271.

It is an arithmetic number, because the mean of its divisors is an integer number (916203960).

Almost surely, 2^20330202021 is an apocalyptic number.

It is an amenable number.

20330202021 is a deficient number, since it is larger than the sum of its proper divisors (8988324699).

20330202021 is a wasteful number, since it uses less digits than its factorization.

20330202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20077.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20330202021 its reverse (12020203302), we get a palindrome (32350405323).

The spelling of 20330202021 in words is "twenty billion, three hundred thirty million, two hundred two thousand, twenty-one".