1232223999 has 4 divisors (see below), whose sum is σ = 1642965336. Its totient is φ = 821482664.

The previous prime is 1232223997. The next prime is 1232224031. The reversal of 1232223999 is 9993222321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1232223999 - 2¹ = 1232223997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1232223999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232223997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205370664 + ... + 205370669.

It is an arithmetic number, because the mean of its divisors is an integer number (410741334).

Almost surely, 2^1232223999 is an apocalyptic number.

1232223999 is a deficient number, since it is larger than the sum of its proper divisors (410741337).

1232223999 is an equidigital number, since it uses as much as digits as its factorization.

1232223999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410741336.

The product of its digits is 104976, while the sum is 42.

The square root of 1232223999 is about 35103.0482864380. The cubic root of 1232223999 is about 1072.0866489769.

The spelling of 1232223999 in words is "one billion, two hundred thirty-two million, two hundred twenty-three thousand, nine hundred ninety-nine".