221223212411 has 4 divisors (see below), whose sum is σ = 232866539400. Its totient is φ = 209579885424.

The previous prime is 221223212401. The next prime is 221223212459. The reversal of 221223212411 is 114212322122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221223212411 - 2¹⁰ = 221223211387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221223212401) 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, 5821663466 + ... + 5821663503.

It is an arithmetic number, because the mean of its divisors is an integer number (58216634850).

Almost surely, 2^221223212411 is an apocalyptic number.

221223212411 is a deficient number, since it is larger than the sum of its proper divisors (11643326989).

221223212411 is a wasteful number, since it uses less digits than its factorization.

221223212411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643326988.

The product of its digits is 768, while the sum is 23.

Adding to 221223212411 its reverse (114212322122), we get a palindrome (335435534533).

The spelling of 221223212411 in words is "two hundred twenty-one billion, two hundred twenty-three million, two hundred twelve thousand, four hundred eleven".