1223123199 has 16 divisors (see below), whose sum is σ = 1638924000. Its totient is φ = 811380096.

The previous prime is 1223123189. The next prime is 1223123201. The reversal of 1223123199 is 9913213221.

It is not a de Polignac number, because 1223123199 - 2⁷ = 1223123071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223123189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682797 + ... + 684585.

It is an arithmetic number, because the mean of its divisors is an integer number (102432750).

Almost surely, 2^1223123199 is an apocalyptic number.

1223123199 is a deficient number, since it is larger than the sum of its proper divisors (415800801).

1223123199 is a wasteful number, since it uses less digits than its factorization.

1223123199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794.

The product of its digits is 5832, while the sum is 33.

The square root of 1223123199 is about 34973.1782799333. The cubic root of 1223123199 is about 1069.4407649189.

The spelling of 1223123199 in words is "one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred ninety-nine".