11122221021112 has 16 divisors (see below), whose sum is σ = 20856431556000. Its totient is φ = 5560505939520.

The previous prime is 11122221021097. The next prime is 11122221021139. The reversal of 11122221021112 is 21112012222111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11122221021112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75493189 + ... + 75640372.

It is an arithmetic number, because the mean of its divisors is an integer number (1303526972250).

Almost surely, 2^{11122221021112} is an apocalyptic number.

It is an amenable number.

11122221021112 is a deficient number, since it is larger than the sum of its proper divisors (9734210534888).

11122221021112 is a wasteful number, since it uses less digits than its factorization.

11122221021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151142766 (or 151142762 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11122221021112 its reverse (21112012222111), we get a palindrome (32234233243223).

The spelling of 11122221021112 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, one hundred twelve".