1020119999 has 2 divisors, whose sum is σ = 1020120000. Its totient is φ = 1020119998.

The previous prime is 1020119993. The next prime is 1020120041. The reversal of 1020119999 is 9999110201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020119999 - 2⁸ = 1020119743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020119993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510059999 + 510060000.

It is an arithmetic number, because the mean of its divisors is an integer number (510060000).

Almost surely, 2^1020119999 is an apocalyptic number.

1020119999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020119999 is an equidigital number, since it uses as much as digits as its factorization.

1020119999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 41.

The square root of 1020119999 is about 31939.3174473094. The cubic root of 1020119999 is about 1006.6621830836.

The spelling of 1020119999 in words is "one billion, twenty million, one hundred nineteen thousand, nine hundred ninety-nine".