221022111111112 has 64 divisors (see below), whose sum is σ = 425896131608640. Its totient is φ = 107467367884800.

The previous prime is 221022111111089. The next prime is 221022111111161. The reversal of 221022111111112 is 211111111220122.

It is a super-3 number, since 3×221022111111112³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221022111111112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522760743 + ... + 523183369.

It is an arithmetic number, because the mean of its divisors is an integer number (6654627056385).

Almost surely, 2^{221022111111112} is an apocalyptic number.

It is an amenable number.

221022111111112 is a deficient number, since it is larger than the sum of its proper divisors (204874020497528).

221022111111112 is a wasteful number, since it uses less digits than its factorization.

221022111111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427822 (or 427818 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 221022111111112 its reverse (211111111220122), we get a palindrome (432133222331234).

The spelling of 221022111111112 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".