1220244401 has 8 divisors (see below), whose sum is σ = 1239352224. Its totient is φ = 1201163040.

The previous prime is 1220244373. The next prime is 1220244407. The reversal of 1220244401 is 1044420221.

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 1220244401 - 2¹⁰ = 1220243377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220244407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99461 + ... + 111053.

It is an arithmetic number, because the mean of its divisors is an integer number (154919028).

Almost surely, 2^1220244401 is an apocalyptic number.

It is an amenable number.

1220244401 is a deficient number, since it is larger than the sum of its proper divisors (19107823).

1220244401 is a wasteful number, since it uses less digits than its factorization.

1220244401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231.

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

The square root of 1220244401 is about 34931.9968080841. The cubic root of 1220244401 is about 1068.6010777713.

Adding to 1220244401 its reverse (1044420221), we get a palindrome (2264664622).

The spelling of 1220244401 in words is "one billion, two hundred twenty million, two hundred forty-four thousand, four hundred one".