202300210121 has 2 divisors, whose sum is σ = 202300210122. Its totient is φ = 202300210120.

The previous prime is 202300210117. The next prime is 202300210157. The reversal of 202300210121 is 121012003202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132637998025 + 69662212096 = 364195^2 + 263936^2 .

It is a cyclic number.

It is not a de Polignac number, because 202300210121 - 2² = 202300210117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202300210096 and 202300210105.

It is not a weakly prime, because it can be changed into another prime (202300210621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101150105060 + 101150105061.

It is an arithmetic number, because the mean of its divisors is an integer number (101150105061).

Almost surely, 2^202300210121 is an apocalyptic number.

It is an amenable number.

202300210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202300210121 is an equidigital number, since it uses as much as digits as its factorization.

202300210121 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 14.

Adding to 202300210121 its reverse (121012003202), we get a palindrome (323312213323).

The spelling of 202300210121 in words is "two hundred two billion, three hundred million, two hundred ten thousand, one hundred twenty-one".