221434310401 has 4 divisors (see below), whose sum is σ = 228577352704. Its totient is φ = 214291268100.

The previous prime is 221434310393. The next prime is 221434310431. The reversal of 221434310401 is 104013434122.

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 not a de Polignac number, because 221434310401 - 2³ = 221434310393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221434310431) 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, 3571521105 + ... + 3571521166.

It is an arithmetic number, because the mean of its divisors is an integer number (57144338176).

Almost surely, 2^221434310401 is an apocalyptic number.

It is an amenable number.

221434310401 is a deficient number, since it is larger than the sum of its proper divisors (7143042303).

221434310401 is an equidigital number, since it uses as much as digits as its factorization.

221434310401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143042302.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221434310401 its reverse (104013434122), we get a palindrome (325447744523).

The spelling of 221434310401 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred ten thousand, four hundred one".