1223312001 has 8 divisors (see below), whose sum is σ = 1633621920. Its totient is φ = 814271712.

The previous prime is 1223311997. The next prime is 1223312011. The reversal of 1223312001 is 1002133221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223312001 - 2² = 1223311997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223312011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315156 + ... + 319013.

It is an arithmetic number, because the mean of its divisors is an integer number (204202740).

Almost surely, 2^1223312001 is an apocalyptic number.

It is an amenable number.

1223312001 is a deficient number, since it is larger than the sum of its proper divisors (410309919).

1223312001 is an equidigital number, since it uses as much as digits as its factorization.

1223312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634815.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1223312001 is about 34975.8774157275. The cubic root of 1223312001 is about 1069.4957885849.

Adding to 1223312001 its reverse (1002133221), we get a palindrome (2225445222).

The spelling of 1223312001 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, one".