1213223199 has 12 divisors (see below), whose sum is σ = 1656132696. Its totient is φ = 790002192.

The previous prime is 1213223183. The next prime is 1213223233. The reversal of 1213223199 is 9913223121.

It is not a de Polignac number, because 1213223199 - 2⁴ = 1213223183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213223399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103812 + ... + 114905.

It is an arithmetic number, because the mean of its divisors is an integer number (138011058).

Almost surely, 2^1213223199 is an apocalyptic number.

1213223199 is a deficient number, since it is larger than the sum of its proper divisors (442909497).

1213223199 is an equidigital number, since it uses as much as digits as its factorization.

1213223199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218806 (or 218763 counting only the distinct ones).

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

The square root of 1213223199 is about 34831.3536773982. The cubic root of 1213223199 is about 1066.5475818988.

The spelling of 1213223199 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, one hundred ninety-nine".