1213013002009 has 2 divisors, whose sum is σ = 1213013002010. Its totient is φ = 1213013002008.

The previous prime is 1213013001953. The next prime is 1213013002079. The reversal of 1213013002009 is 9002003103121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774408800025 + 438604201984 = 880005^2 + 662272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213013002009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213013002079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606506501004 + 606506501005.

It is an arithmetic number, because the mean of its divisors is an integer number (606506501005).

Almost surely, 2^{1213013002009} is an apocalyptic number.

It is an amenable number.

1213013002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213013002009 is an equidigital number, since it uses as much as digits as its factorization.

1213013002009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 1213013002009 in words is "one trillion, two hundred thirteen billion, thirteen million, two thousand, nine".