221213232322211 has 4 divisors (see below), whose sum is σ = 232856034023400. Its totient is φ = 209570430621024.

The previous prime is 221213232322207. The next prime is 221213232322231. The reversal of 221213232322211 is 112223232312122.

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 221213232322211 - 2² = 221213232322207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221213232322231) 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, 5821400850566 + ... + 5821400850603.

It is an arithmetic number, because the mean of its divisors is an integer number (58214008505850).

Almost surely, 2^{221213232322211} is an apocalyptic number.

221213232322211 is a deficient number, since it is larger than the sum of its proper divisors (11642801701189).

221213232322211 is a wasteful number, since it uses less digits than its factorization.

221213232322211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642801701188.

The product of its digits is 6912, while the sum is 29.

Adding to 221213232322211 its reverse (112223232312122), we get a palindrome (333436464634333).

The spelling of 221213232322211 in words is "two hundred twenty-one trillion, two hundred thirteen billion, two hundred thirty-two million, three hundred twenty-two thousand, two hundred eleven".