221434323401 has 8 divisors (see below), whose sum is σ = 229008299520. Its totient is φ = 213979622688.

The previous prime is 221434323389. The next prime is 221434323431. The reversal of 221434323401 is 104323434122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221434323401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221434323431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29815076 + ... + 29822501.

It is an arithmetic number, because the mean of its divisors is an integer number (28626037440).

Almost surely, 2^221434323401 is an apocalyptic number.

It is an amenable number.

221434323401 is a deficient number, since it is larger than the sum of its proper divisors (7573976119).

221434323401 is an equidigital number, since it uses as much as digits as its factorization.

221434323401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59637703.

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

Adding to 221434323401 its reverse (104323434122), we get a palindrome (325757757523).

The spelling of 221434323401 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred twenty-three thousand, four hundred one".