220001344332401 has 4 divisors (see below), whose sum is σ = 220600803036672. Its totient is φ = 219401885628132.

The previous prime is 220001344332359. The next prime is 220001344332433. The reversal of 220001344332401 is 104233443100022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220001344332401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001344332461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299729351585 + ... + 299729352318.

It is an arithmetic number, because the mean of its divisors is an integer number (55150200759168).

Almost surely, 2^{220001344332401} is an apocalyptic number.

It is an amenable number.

220001344332401 is a deficient number, since it is larger than the sum of its proper divisors (599458704271).

220001344332401 is an equidigital number, since it uses as much as digits as its factorization.

220001344332401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599458704270.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 220001344332401 its reverse (104233443100022), we get a palindrome (324234787432423).

The spelling of 220001344332401 in words is "two hundred twenty trillion, one billion, three hundred forty-four million, three hundred thirty-two thousand, four hundred one".