222012221112 has 256 divisors, whose sum is σ = 700862976000. Its totient is φ = 64506585600.

The previous prime is 222012221107. The next prime is 222012221159. The reversal of 222012221112 is 211122210222.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8014678 + ... + 8042330.

It is an arithmetic number, because the mean of its divisors is an integer number (2737746000).

Almost surely, 2^222012221112 is an apocalyptic number.

222012221112 is a gapful number since it is divisible by the number (22) 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 222012221112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350431488000).

222012221112 is an abundant number, since it is smaller than the sum of its proper divisors (478850754888).

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

222012221112 is a wasteful number, since it uses less digits than its factorization.

222012221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27819 (or 27809 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222012221112 its reverse (211122210222), we get a palindrome (433134431334).

The spelling of 222012221112 in words is "two hundred twenty-two billion, twelve million, two hundred twenty-one thousand, one hundred twelve".