1123019999 has 2 divisors, whose sum is σ = 1123020000. Its totient is φ = 1123019998.

The previous prime is 1123019977. The next prime is 1123020001. The reversal of 1123019999 is 9999103211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123019999 - 2²⁴ = 1106242783 is a prime.

It is a super-2 number, since 2×1123019999² = 2522347836307920002, which contains 22 as substring.

Together with 1123020001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123019929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561509999 + 561510000.

It is an arithmetic number, because the mean of its divisors is an integer number (561510000).

Almost surely, 2^1123019999 is an apocalyptic number.

1123019999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123019999 is an equidigital number, since it uses as much as digits as its factorization.

1123019999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 1123019999 is about 33511.4905517496. The cubic root of 1123019999 is about 1039.4313949863.

The spelling of 1123019999 in words is "one billion, one hundred twenty-three million, nineteen thousand, nine hundred ninety-nine".