221434341211 has 8 divisors (see below), whose sum is σ = 234794368224. Its totient is φ = 208111478400.

The previous prime is 221434341203. The next prime is 221434341221. The reversal of 221434341211 is 112143434122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221434341211 - 2³ = 221434341203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221434341211.

It is not an unprimeable number, because it can be changed into a prime (221434341221) 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, 9278775 + ... + 9302608.

It is an arithmetic number, because the mean of its divisors is an integer number (29349296028).

Almost surely, 2^221434341211 is an apocalyptic number.

221434341211 is a deficient number, since it is larger than the sum of its proper divisors (13360027013).

221434341211 is a wasteful number, since it uses less digits than its factorization.

221434341211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18582101.

The product of its digits is 4608, while the sum is 28.

Adding to 221434341211 its reverse (112143434122), we get a palindrome (333577775333).

It can be divided in two parts, 22143434121 and 1, that added together give a palindrome (22143434122).

The spelling of 221434341211 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-one thousand, two hundred eleven".