222111221011 has 4 divisors (see below), whose sum is σ = 223227358000. Its totient is φ = 220995084024.

The previous prime is 222111220957. The next prime is 222111221029. The reversal of 222111221011 is 110122111222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222111221011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222111221411) 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, 558068196 + ... + 558068593.

It is an arithmetic number, because the mean of its divisors is an integer number (55806839500).

Almost surely, 2^222111221011 is an apocalyptic number.

222111221011 is a deficient number, since it is larger than the sum of its proper divisors (1116136989).

222111221011 is a wasteful number, since it uses less digits than its factorization.

222111221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116136988.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222111221011 its reverse (110122111222), we get a palindrome (332233332233).

The spelling of 222111221011 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, eleven".