1299999021119 has 2 divisors, whose sum is σ = 1299999021120. Its totient is φ = 1299999021118.

The previous prime is 1299999021103. The next prime is 1299999021161. The reversal of 1299999021119 is 9111209999921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1299999021119 - 2⁴ = 1299999021103 is a prime.

It is a super-2 number, since 2×1299999021119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299999021319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649999510559 + 649999510560.

It is an arithmetic number, because the mean of its divisors is an integer number (649999510560).

Almost surely, 2^{1299999021119} is an apocalyptic number.

1299999021119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299999021119 is an equidigital number, since it uses as much as digits as its factorization.

1299999021119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2125764, while the sum is 62.

The spelling of 1299999021119 in words is "one trillion, two hundred ninety-nine billion, nine hundred ninety-nine million, twenty-one thousand, one hundred nineteen".