1232219999 has 2 divisors, whose sum is σ = 1232220000. Its totient is φ = 1232219998.

The previous prime is 1232219987. The next prime is 1232220001. The reversal of 1232219999 is 9999122321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1232219999 - 2²⁸ = 963784543 is a prime.

It is a super-2 number, since 2×1232219999² = 3036732251871120002, which contains 22 as substring.

Together with 1232220001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232219099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616109999 + 616110000.

It is an arithmetic number, because the mean of its divisors is an integer number (616110000).

Almost surely, 2^1232219999 is an apocalyptic number.

1232219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232219999 is an equidigital number, since it uses as much as digits as its factorization.

1232219999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 47.

The square root of 1232219999 is about 35102.9913112829. The cubic root of 1232219999 is about 1072.0854889196.

The spelling of 1232219999 in words is "one billion, two hundred thirty-two million, two hundred nineteen thousand, nine hundred ninety-nine".