202243342109 has 2 divisors, whose sum is σ = 202243342110. Its totient is φ = 202243342108.

The previous prime is 202243342097. The next prime is 202243342219. The reversal of 202243342109 is 901243342202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202207605625 + 35736484 = 449675^2 + 5978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202243342109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202243341109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101121671054 + 101121671055.

It is an arithmetic number, because the mean of its divisors is an integer number (101121671055).

Almost surely, 2^202243342109 is an apocalyptic number.

It is an amenable number.

202243342109 is a deficient number, since it is larger than the sum of its proper divisors (1).

202243342109 is an equidigital number, since it uses as much as digits as its factorization.

202243342109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 202243342109 in words is "two hundred two billion, two hundred forty-three million, three hundred forty-two thousand, one hundred nine".