221133122 has 16 divisors (see below), whose sum is σ = 379285632. Its totient is φ = 94721280.

The previous prime is 221133103. The next prime is 221133139. The reversal of 221133122 is 221331122.

It is a self number, because there is not a number n which added to its sum of digits gives 221133122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37922 + ... + 43362.

It is an arithmetic number, because the mean of its divisors is an integer number (23705352).

Almost surely, 2^221133122 is an apocalyptic number.

221133122 is a deficient number, since it is larger than the sum of its proper divisors (158152510).

221133122 is a wasteful number, since it uses less digits than its factorization.

221133122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8353.

The product of its digits is 144, while the sum is 17.

The square root of 221133122 is about 14870.5454506551. The cubic root of 221133122 is about 604.7157301222.

Adding to 221133122 its reverse (221331122), we get a palindrome (442464244).

The spelling of 221133122 in words is "two hundred twenty-one million, one hundred thirty-three thousand, one hundred twenty-two".