20302023221 has 8 divisors (see below), whose sum is σ = 20340603360. Its totient is φ = 20263467952.

The previous prime is 20302023191. The next prime is 20302023223. The reversal of 20302023221 is 12232020302.

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 20302023221 - 2²² = 20297828917 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 20302023221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302023223) 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, 2581331 + ... + 2589183.

It is an arithmetic number, because the mean of its divisors is an integer number (2542575420).

Almost surely, 2^20302023221 is an apocalyptic number.

It is an amenable number.

20302023221 is a deficient number, since it is larger than the sum of its proper divisors (38580139).

20302023221 is an equidigital number, since it uses as much as digits as its factorization.

20302023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20302023221 its reverse (12232020302), we get a palindrome (32534043523).

The spelling of 20302023221 in words is "twenty billion, three hundred two million, twenty-three thousand, two hundred twenty-one".