1223122001 has 8 divisors (see below), whose sum is σ = 1296214344. Its totient is φ = 1150156800.

The previous prime is 1223121997. The next prime is 1223122007. The reversal of 1223122001 is 1002213221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 874739776 + 348382225 = 29576^2 + 18665^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1223122001 - 2² = 1223121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223122007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11600 + ... + 50801.

It is an arithmetic number, because the mean of its divisors is an integer number (162026793).

Almost surely, 2^1223122001 is an apocalyptic number.

It is an amenable number.

1223122001 is a deficient number, since it is larger than the sum of its proper divisors (73092343).

1223122001 is a wasteful number, since it uses less digits than its factorization.

1223122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63571.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1223122001 is about 34973.1611525181. The cubic root of 1223122001 is about 1069.4404157607.

Adding to 1223122001 its reverse (1002213221), we get a palindrome (2225335222).

The spelling of 1223122001 in words is "one billion, two hundred twenty-three million, one hundred twenty-two thousand, one".