202123023101 has 2 divisors, whose sum is σ = 202123023102. Its totient is φ = 202123023100.

The previous prime is 202123023083. The next prime is 202123023127. The reversal of 202123023101 is 101320321202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201089464900 + 1033558201 = 448430^2 + 32149^2 .

It is a cyclic number.

It is not a de Polignac number, because 202123023101 - 2¹⁰ = 202123022077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202123023101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202123023901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061511550 + 101061511551.

It is an arithmetic number, because the mean of its divisors is an integer number (101061511551).

Almost surely, 2^202123023101 is an apocalyptic number.

It is an amenable number.

202123023101 is a deficient number, since it is larger than the sum of its proper divisors (1).

202123023101 is an equidigital number, since it uses as much as digits as its factorization.

202123023101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202123023101 its reverse (101320321202), we get a palindrome (303443344303).

The spelling of 202123023101 in words is "two hundred two billion, one hundred twenty-three million, twenty-three thousand, one hundred one".