202113400109 has 2 divisors, whose sum is σ = 202113400110. Its totient is φ = 202113400108.

The previous prime is 202113400079. The next prime is 202113400117. The reversal of 202113400109 is 901004311202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202005302500 + 108097609 = 449450^2 + 10397^2 .

It is a cyclic number.

It is not a de Polignac number, because 202113400109 - 2¹² = 202113396013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202113400199) 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, 101056700054 + 101056700055.

It is an arithmetic number, because the mean of its divisors is an integer number (101056700055).

Almost surely, 2^202113400109 is an apocalyptic number.

It is an amenable number.

202113400109 is a deficient number, since it is larger than the sum of its proper divisors (1).

202113400109 is an equidigital number, since it uses as much as digits as its factorization.

202113400109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 202113400109 in words is "two hundred two billion, one hundred thirteen million, four hundred thousand, one hundred nine".