20110033021 has 16 divisors (see below), whose sum is σ = 22233673728. Its totient is φ = 18072921600.

The previous prime is 20110033007. The next prime is 20110033043. The reversal of 20110033021 is 12033001102.

It is a cyclic number.

It is not a de Polignac number, because 20110033021 - 2⁷ = 20110032893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110032992 and 20110033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110033001) 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, 30541 + ... + 202861.

It is an arithmetic number, because the mean of its divisors is an integer number (1389604608).

Almost surely, 2^20110033021 is an apocalyptic number.

It is an amenable number.

20110033021 is a deficient number, since it is larger than the sum of its proper divisors (2123640707).

20110033021 is a wasteful number, since it uses less digits than its factorization.

20110033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172572.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20110033021 its reverse (12033001102), we get a palindrome (32143034123).

The spelling of 20110033021 in words is "twenty billion, one hundred ten million, thirty-three thousand, twenty-one".