1202002312009 has 2 divisors, whose sum is σ = 1202002312010. Its totient is φ = 1202002312008.

The previous prime is 1202002311941. The next prime is 1202002312013. The reversal of 1202002312009 is 9002132002021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719533152009 + 482469160000 = 848253^2 + 694600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202002312009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202002312109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601001156004 + 601001156005.

It is an arithmetic number, because the mean of its divisors is an integer number (601001156005).

Almost surely, 2^{1202002312009} is an apocalyptic number.

It is an amenable number.

1202002312009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202002312009 is an equidigital number, since it uses as much as digits as its factorization.

1202002312009 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 22.

The spelling of 1202002312009 in words is "one trillion, two hundred two billion, two million, three hundred twelve thousand, nine".