1121819299 has 8 divisors (see below), whose sum is σ = 1183610880. Its totient is φ = 1060302600.

The previous prime is 1121819297. The next prime is 1121819323. The reversal of 1121819299 is 9929181211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121819299 - 2¹ = 1121819297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121819291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60307 + ... + 76684.

It is an arithmetic number, because the mean of its divisors is an integer number (147951360).

Almost surely, 2^1121819299 is an apocalyptic number.

1121819299 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1121819299 is a deficient number, since it is larger than the sum of its proper divisors (61791581).

1121819299 is a wasteful number, since it uses less digits than its factorization.

1121819299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137441.

The product of its digits is 23328, while the sum is 43.

The square root of 1121819299 is about 33493.5710099715. The cubic root of 1121819299 is about 1039.0608197123.

The spelling of 1121819299 in words is "one billion, one hundred twenty-one million, eight hundred nineteen thousand, two hundred ninety-nine".