1213102399 has 2 divisors, whose sum is σ = 1213102400. Its totient is φ = 1213102398.

The previous prime is 1213102361. The next prime is 1213102403. The reversal of 1213102399 is 9932013121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213102399 - 2¹⁹ = 1212578111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213102399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213102339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606551199 + 606551200.

It is an arithmetic number, because the mean of its divisors is an integer number (606551200).

Almost surely, 2^1213102399 is an apocalyptic number.

1213102399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213102399 is an equidigital number, since it uses as much as digits as its factorization.

1213102399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1213102399 is about 34829.6195643880. The cubic root of 1213102399 is about 1066.5121821954.

The spelling of 1213102399 in words is "one billion, two hundred thirteen million, one hundred two thousand, three hundred ninety-nine".