20123303002221 has 16 divisors (see below), whose sum is σ = 28427113824768. Its totient is φ = 12618499584000.

The previous prime is 20123303002193. The next prime is 20123303002223. The reversal of 20123303002221 is 12220030332102.

It is a happy number.

It is not a de Polignac number, because 20123303002221 - 2¹⁵ = 20123302969453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123303002223) 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, 123145885 + ... + 123309186.

It is an arithmetic number, because the mean of its divisors is an integer number (1776694614048).

Almost surely, 2^{20123303002221} is an apocalyptic number.

It is an amenable number.

20123303002221 is a deficient number, since it is larger than the sum of its proper divisors (8303810822547).

20123303002221 is a wasteful number, since it uses less digits than its factorization.

20123303002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246456692.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20123303002221 its reverse (12220030332102), we get a palindrome (32343333334323).

The spelling of 20123303002221 in words is "twenty trillion, one hundred twenty-three billion, three hundred three million, two thousand, two hundred twenty-one".