221213231133 has 16 divisors (see below), whose sum is σ = 307964253696. Its totient is φ = 140976736560.

The previous prime is 221213231047. The next prime is 221213231233. The reversal of 221213231133 is 331132312122.

It is not a de Polignac number, because 221213231133 - 2⁹ = 221213230621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221213231233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872983 + ... + 1097508.

It is an arithmetic number, because the mean of its divisors is an integer number (19247765856).

Almost surely, 2^221213231133 is an apocalyptic number.

221213231133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221213231133 is a deficient number, since it is larger than the sum of its proper divisors (86751022563).

221213231133 is a wasteful number, since it uses less digits than its factorization.

221213231133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972144.

The product of its digits is 1296, while the sum is 24.

Adding to 221213231133 its reverse (331132312122), we get a palindrome (552345543255).

The spelling of 221213231133 in words is "two hundred twenty-one billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-three".