1222110221112 has 288 divisors, whose sum is σ = 3956272210800. Its totient is φ = 339130091520.

The previous prime is 1222110221081. The next prime is 1222110221113. The reversal of 1222110221112 is 2111220112221.

1222110221112 is a `hidden beast` number, since 1 + 222 + 110 + 221 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222110221113) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5368339 + ... + 5591357.

Almost surely, 2^{1222110221112} is an apocalyptic number.

1222110221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222110221112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1978136105400).

1222110221112 is an abundant number, since it is smaller than the sum of its proper divisors (2734161989688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222110221112 is a wasteful number, since it uses less digits than its factorization.

1222110221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223107 (or 223089 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1222110221112 its reverse (2111220112221), we get a palindrome (3333330333333).

The spelling of 1222110221112 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, one hundred twelve".