20023002221 has 8 divisors (see below), whose sum is σ = 20366880000. Its totient is φ = 19679274720.

The previous prime is 20023002211. The next prime is 20023002227. The reversal of 20023002221 is 12220032002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20023002221 - 2³⁰ = 18949260397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023002196 and 20023002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023002227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249905 + ... + 320153.

It is an arithmetic number, because the mean of its divisors is an integer number (2545860000).

Almost surely, 2^20023002221 is an apocalyptic number.

It is an amenable number.

20023002221 is a deficient number, since it is larger than the sum of its proper divisors (343877779).

20023002221 is an equidigital number, since it uses as much as digits as its factorization.

20023002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75139.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20023002221 its reverse (12220032002), we get a palindrome (32243034223).

The spelling of 20023002221 in words is "twenty billion, twenty-three million, two thousand, two hundred twenty-one".