221133222011 has 8 divisors (see below), whose sum is σ = 241157945280. Its totient is φ = 201539138112.

The previous prime is 221133221917. The next prime is 221133222043. The reversal of 221133222011 is 110222331122.

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

It is a de Polignac number, because none of the positive numbers 2^k-221133222011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221133222911) 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, 107658770 + ... + 107660823.

It is an arithmetic number, because the mean of its divisors is an integer number (30144743160).

Almost surely, 2^221133222011 is an apocalyptic number.

221133222011 is a deficient number, since it is larger than the sum of its proper divisors (20024723269).

221133222011 is a wasteful number, since it uses less digits than its factorization.

221133222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215319685.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221133222011 its reverse (110222331122), we get a palindrome (331355553133).

The spelling of 221133222011 in words is "two hundred twenty-one billion, one hundred thirty-three million, two hundred twenty-two thousand, eleven".