20013232201021 has 16 divisors (see below), whose sum is σ = 20162356044480. Its totient is φ = 19864633662720.

The previous prime is 20013232201009. The next prime is 20013232201031. The reversal of 20013232201021 is 12010223231002.

It is a cyclic number.

It is not a de Polignac number, because 20013232201021 - 2⁴³ = 11217139178813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20013232201021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013232201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256867766 + ... + 1256883688.

It is an arithmetic number, because the mean of its divisors is an integer number (1260147252780).

Almost surely, 2^{20013232201021} is an apocalyptic number.

It is an amenable number.

20013232201021 is a deficient number, since it is larger than the sum of its proper divisors (149123843459).

20013232201021 is a wasteful number, since it uses less digits than its factorization.

20013232201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31836.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20013232201021 its reverse (12010223231002), we get a palindrome (32023455432023).

The spelling of 20013232201021 in words is "twenty trillion, thirteen billion, two hundred thirty-two million, two hundred one thousand, twenty-one".