202012343209 has 2 divisors, whose sum is σ = 202012343210. Its totient is φ = 202012343208.

The previous prime is 202012343179. The next prime is 202012343219. The reversal of 202012343209 is 902343210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101556942400 + 100455400809 = 318680^2 + 316947^2 .

It is a cyclic number.

It is not a de Polignac number, because 202012343209 - 2¹¹ = 202012341161 is a prime.

It is not a weakly prime, because it can be changed into another prime (202012343219) 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, 101006171604 + 101006171605.

It is an arithmetic number, because the mean of its divisors is an integer number (101006171605).

Almost surely, 2^202012343209 is an apocalyptic number.

It is an amenable number.

202012343209 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012343209 is an equidigital number, since it uses as much as digits as its factorization.

202012343209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 202012343209 in words is "two hundred two billion, twelve million, three hundred forty-three thousand, two hundred nine".