221241120401 has 16 divisors (see below), whose sum is σ = 268646757120. Its totient is φ = 178480203840.

The previous prime is 221241120391. The next prime is 221241120467. The reversal of 221241120401 is 104021142122.

It is not a de Polignac number, because 221241120401 - 2¹⁰ = 221241119377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221241120301) 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, 3182165 + ... + 3250946.

It is an arithmetic number, because the mean of its divisors is an integer number (16790422320).

Almost surely, 2^221241120401 is an apocalyptic number.

It is an amenable number.

221241120401 is a deficient number, since it is larger than the sum of its proper divisors (47405636719).

221241120401 is an frugal number, since it uses more digits than its factorization.

221241120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433169 (or 6433135 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221241120401 its reverse (104021142122), we get a palindrome (325262262523).

The spelling of 221241120401 in words is "two hundred twenty-one billion, two hundred forty-one million, one hundred twenty thousand, four hundred one".