1230001400209 has 2 divisors, whose sum is σ = 1230001400210. Its totient is φ = 1230001400208.

The previous prime is 1230001400099. The next prime is 1230001400263. The reversal of 1230001400209 is 9020041000321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1049846144400 + 180155255809 = 1024620^2 + 424447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230001400209 - 2¹³ = 1230001392017 is a prime.

It is a super-2 number, since 2×1230001400209² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1230001400209.

It is not a weakly prime, because it can be changed into another prime (1230001400609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615000700104 + 615000700105.

It is an arithmetic number, because the mean of its divisors is an integer number (615000700105).

Almost surely, 2^{1230001400209} is an apocalyptic number.

It is an amenable number.

1230001400209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230001400209 is an equidigital number, since it uses as much as digits as its factorization.

1230001400209 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 1230001400209 in words is "one trillion, two hundred thirty billion, one million, four hundred thousand, two hundred nine".