1222241112 has 144 divisors (see below), whose sum is σ = 3548797200. Its totient is φ = 379929600.

The previous prime is 1222241107. The next prime is 1222241113. The reversal of 1222241112 is 2111422221.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222241113) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3141814 + ... + 3142202.

It is an arithmetic number, because the mean of its divisors is an integer number (24644425).

Almost surely, 2^1222241112 is an apocalyptic number.

1222241112 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 1222241112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774398600).

1222241112 is an abundant number, since it is smaller than the sum of its proper divisors (2326556088).

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

1222241112 is a wasteful number, since it uses less digits than its factorization.

1222241112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 562 counting only the distinct ones).

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

The square root of 1222241112 is about 34960.5650984077. The cubic root of 1222241112 is about 1069.1836181167.

Adding to 1222241112 its reverse (2111422221), we get a palindrome (3333663333).

The spelling of 1222241112 in words is "one billion, two hundred twenty-two million, two hundred forty-one thousand, one hundred twelve".