1121001799 has 2 divisors, whose sum is σ = 1121001800. Its totient is φ = 1121001798.

The previous prime is 1121001773. The next prime is 1121001851. The reversal of 1121001799 is 9971001211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121001799 - 2²⁵ = 1087447367 is a prime.

It is a super-2 number, since 2×1121001799² = 2513290066722472802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121001799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121301799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500899 + 560500900.

It is an arithmetic number, because the mean of its divisors is an integer number (560500900).

Almost surely, 2^1121001799 is an apocalyptic number.

1121001799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121001799 is an equidigital number, since it uses as much as digits as its factorization.

1121001799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 31.

The square root of 1121001799 is about 33481.3649512680. The cubic root of 1121001799 is about 1038.8083611570.

The spelling of 1121001799 in words is "one billion, one hundred twenty-one million, one thousand, seven hundred ninety-nine".