202460172121 has 2 divisors, whose sum is σ = 202460172122. Its totient is φ = 202460172120.

The previous prime is 202460172007. The next prime is 202460172137. The reversal of 202460172121 is 121271064202.

202460172121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192162996496 + 10297175625 = 438364^2 + 101475^2 .

It is a cyclic number.

It is not a de Polignac number, because 202460172121 - 2⁹ = 202460171609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202460172121.

It is not a weakly prime, because it can be changed into another prime (202460172151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101230086060 + 101230086061.

It is an arithmetic number, because the mean of its divisors is an integer number (101230086061).

Almost surely, 2^202460172121 is an apocalyptic number.

It is an amenable number.

202460172121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202460172121 is an equidigital number, since it uses as much as digits as its factorization.

202460172121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 202460172121 in words is "two hundred two billion, four hundred sixty million, one hundred seventy-two thousand, one hundred twenty-one".