1222444001 has 8 divisors (see below), whose sum is σ = 1227035304. Its totient is φ = 1217862400.

The previous prime is 1222443967. The next prime is 1222444039. The reversal of 1222444001 is 1004442221.

It can be written as a sum of positive squares in 4 ways, for example, as 30813601 + 1191630400 = 5551^2 + 34520^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222444001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222444081) 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, 328451 + ... + 332151.

It is an arithmetic number, because the mean of its divisors is an integer number (153379413).

Almost surely, 2^1222444001 is an apocalyptic number.

It is an amenable number.

1222444001 is a deficient number, since it is larger than the sum of its proper divisors (4591303).

1222444001 is an equidigital number, since it uses as much as digits as its factorization.

1222444001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1222444001 is about 34963.4666616456. The cubic root of 1222444001 is about 1069.2427754550.

Adding to 1222444001 its reverse (1004442221), we get a palindrome (2226886222).

The spelling of 1222444001 in words is "one billion, two hundred twenty-two million, four hundred forty-four thousand, one".