1212403099 has 2 divisors, whose sum is σ = 1212403100. Its totient is φ = 1212403098.

The previous prime is 1212403081. The next prime is 1212403111. The reversal of 1212403099 is 9903042121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212403099 - 2⁵ = 1212403067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212403099.

It is not a weakly prime, because it can be changed into another prime (1212403069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606201549 + 606201550.

It is an arithmetic number, because the mean of its divisors is an integer number (606201550).

Almost surely, 2^1212403099 is an apocalyptic number.

1212403099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212403099 is an equidigital number, since it uses as much as digits as its factorization.

1212403099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1212403099 is about 34819.5792478887. The cubic root of 1212403099 is about 1066.3072104016.

The spelling of 1212403099 in words is "one billion, two hundred twelve million, four hundred three thousand, ninety-nine".