221200441401 has 4 divisors (see below), whose sum is σ = 294933921872. Its totient is φ = 147466960932.

The previous prime is 221200441391. The next prime is 221200441411. The reversal of 221200441401 is 104144002122.

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 an interprime number because it is at equal distance from previous prime (221200441391) and next prime (221200441411).

It is not a de Polignac number, because 221200441401 - 2¹⁸ = 221200179257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200441411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36866740231 + ... + 36866740236.

It is an arithmetic number, because the mean of its divisors is an integer number (73733480468).

Almost surely, 2^221200441401 is an apocalyptic number.

It is an amenable number.

221200441401 is a deficient number, since it is larger than the sum of its proper divisors (73733480471).

221200441401 is an equidigital number, since it uses as much as digits as its factorization.

221200441401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73733480470.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221200441401 its reverse (104144002122), we get a palindrome (325344443523).

The spelling of 221200441401 in words is "two hundred twenty-one billion, two hundred million, four hundred forty-one thousand, four hundred one".