1220401441 has 16 divisors (see below), whose sum is σ = 1420087680. Its totient is φ = 1027111680.

The previous prime is 1220401439. The next prime is 1220401477. The reversal of 1220401441 is 1441040221.

It is not a de Polignac number, because 1220401441 - 2¹ = 1220401439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220401421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279225 + ... + 283561.

It is an arithmetic number, because the mean of its divisors is an integer number (88755480).

Almost surely, 2^1220401441 is an apocalyptic number.

It is an amenable number.

1220401441 is a deficient number, since it is larger than the sum of its proper divisors (199686239).

1220401441 is an equidigital number, since it uses as much as digits as its factorization.

1220401441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1220401441 is about 34934.2445316912. The cubic root of 1220401441 is about 1068.6469171989.

Adding to 1220401441 its reverse (1441040221), we get a palindrome (2661441662).

The spelling of 1220401441 in words is "one billion, two hundred twenty million, four hundred one thousand, four hundred forty-one".