202120010023 has 2 divisors, whose sum is σ = 202120010024. Its totient is φ = 202120010022.

The previous prime is 202120010021. The next prime is 202120010033. The reversal of 202120010023 is 320010021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202120010023 - 2¹ = 202120010021 is a prime.

Together with 202120010021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 202120009985 and 202120010012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202120010021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060005011 + 101060005012.

It is an arithmetic number, because the mean of its divisors is an integer number (101060005012).

Almost surely, 2^202120010023 is an apocalyptic number.

202120010023 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120010023 is an equidigital number, since it uses as much as digits as its factorization.

202120010023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 202120010023 its reverse (320010021202), we get a palindrome (522130031225).

The spelling of 202120010023 in words is "two hundred two billion, one hundred twenty million, ten thousand, twenty-three".