20023330121 has 2 divisors, whose sum is σ = 20023330122. Its totient is φ = 20023330120.

The previous prime is 20023330109. The next prime is 20023330123. The reversal of 20023330121 is 12103332002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19603080121 + 420250000 = 140011^2 + 20500^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023330121 - 2⁶ = 20023330057 is a prime.

Together with 20023330123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20023330121.

It is not a weakly prime, because it can be changed into another prime (20023330123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011665060 + 10011665061.

It is an arithmetic number, because the mean of its divisors is an integer number (10011665061).

Almost surely, 2^20023330121 is an apocalyptic number.

It is an amenable number.

20023330121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023330121 is an equidigital number, since it uses as much as digits as its factorization.

20023330121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20023330121 its reverse (12103332002), we get a palindrome (32126662123).

The spelling of 20023330121 in words is "twenty billion, twenty-three million, three hundred thirty thousand, one hundred twenty-one".