20023013002221 has 24 divisors (see below), whose sum is σ = 28981358654976. Its totient is φ = 13321342156320.

The previous prime is 20023013002207. The next prime is 20023013002249. The reversal of 20023013002221 is 12220031032002.

20023013002221 is a `hidden beast` number, since 20 + 0 + 2 + 301 + 300 + 22 + 21 = 666.

It is not a de Polignac number, because 20023013002221 - 2⁷ = 20023013002093 is a prime.

It is a super-2 number, since 2×20023013002221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20023013002194 and 20023013002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023013002271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81276996 + ... + 81522978.

It is an arithmetic number, because the mean of its divisors is an integer number (1207556610624).

Almost surely, 2^{20023013002221} is an apocalyptic number.

It is an amenable number.

20023013002221 is a deficient number, since it is larger than the sum of its proper divisors (8958345652755).

20023013002221 is a wasteful number, since it uses less digits than its factorization.

20023013002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264473 (or 264470 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20023013002221 its reverse (12220031032002), we get a palindrome (32243044034223).

The spelling of 20023013002221 in words is "twenty trillion, twenty-three billion, thirteen million, two thousand, two hundred twenty-one".