221330120401 has 4 divisors (see below), whose sum is σ = 238355514292. Its totient is φ = 204304726512.

The previous prime is 221330120387. The next prime is 221330120413. The reversal of 221330120401 is 104021033122.

It is a happy number.

221330120401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69841804176 + 151488316225 = 264276^2 + 389215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221330120401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221330120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8512696926 + ... + 8512696951.

It is an arithmetic number, because the mean of its divisors is an integer number (59588878573).

Almost surely, 2^221330120401 is an apocalyptic number.

It is an amenable number.

221330120401 is a deficient number, since it is larger than the sum of its proper divisors (17025393891).

221330120401 is a wasteful number, since it uses less digits than its factorization.

221330120401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17025393890.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221330120401 its reverse (104021033122), we get a palindrome (325351153523).

The spelling of 221330120401 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred twenty thousand, four hundred one".