1210428899 has 2 divisors, whose sum is σ = 1210428900. Its totient is φ = 1210428898.

The previous prime is 1210428871. The next prime is 1210428907. The reversal of 1210428899 is 9988240121.

It is a strong prime.

It is an emirp because it is prime and its reverse (9988240121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210428899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1210428829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605214449 + 605214450.

It is an arithmetic number, because the mean of its divisors is an integer number (605214450).

Almost surely, 2^1210428899 is an apocalyptic number.

1210428899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210428899 is an equidigital number, since it uses as much as digits as its factorization.

1210428899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1210428899 is about 34791.2187052998. The cubic root of 1210428899 is about 1065.7281270542.

The spelling of 1210428899 in words is "one billion, two hundred ten million, four hundred twenty-eight thousand, eight hundred ninety-nine".