1099223045 has 4 divisors (see below), whose sum is σ = 1319067660. Its totient is φ = 879378432.

The previous prime is 1099223029. The next prime is 1099223051. The reversal of 1099223045 is 5403229901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5403229901 = 17 ⋅317837053.

It can be written as a sum of positive squares in 2 ways, for example, as 823862209 + 275360836 = 28703^2 + 16594^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099223045 - 2⁴ = 1099223029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1099222996 and 1099223014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109922300 + ... + 109922309.

It is an arithmetic number, because the mean of its divisors is an integer number (329766915).

Almost surely, 2^1099223045 is an apocalyptic number.

It is an amenable number.

1099223045 is a deficient number, since it is larger than the sum of its proper divisors (219844615).

1099223045 is an equidigital number, since it uses as much as digits as its factorization.

1099223045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219844614.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1099223045 is about 33154.5327971908. The cubic root of 1099223045 is about 1032.0370172433.

The spelling of 1099223045 in words is "one billion, ninety-nine million, two hundred twenty-three thousand, forty-five".