20320122021 has 8 divisors (see below), whose sum is σ = 27161062464. Its totient is φ = 13512964800.

The previous prime is 20320121989. The next prime is 20320122023. The reversal of 20320122021 is 12022102302.

It is a happy number.

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

It is not a de Polignac number, because 20320122021 - 2⁵ = 20320121989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320122023) 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, 8444401 + ... + 8446806.

It is an arithmetic number, because the mean of its divisors is an integer number (3395132808).

Almost surely, 2^20320122021 is an apocalyptic number.

It is an amenable number.

20320122021 is a deficient number, since it is larger than the sum of its proper divisors (6840940443).

20320122021 is a wasteful number, since it uses less digits than its factorization.

20320122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891611.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20320122021 its reverse (12022102302), we get a palindrome (32342224323).

The spelling of 20320122021 in words is "twenty billion, three hundred twenty million, one hundred twenty-two thousand, twenty-one".