202130399123 has 2 divisors, whose sum is σ = 202130399124. Its totient is φ = 202130399122.

The previous prime is 202130399111. The next prime is 202130399137. The reversal of 202130399123 is 321993031202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202130399123 - 2¹⁸ = 202130136979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (202130399183) 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, 101065199561 + 101065199562.

It is an arithmetic number, because the mean of its divisors is an integer number (101065199562).

Almost surely, 2^202130399123 is an apocalyptic number.

202130399123 is a deficient number, since it is larger than the sum of its proper divisors (1).

202130399123 is an equidigital number, since it uses as much as digits as its factorization.

202130399123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 202130399123 in words is "two hundred two billion, one hundred thirty million, three hundred ninety-nine thousand, one hundred twenty-three".