1222133112 has 24 divisors (see below), whose sum is σ = 3309944040. Its totient is φ = 407377680.

The previous prime is 1222133093. The next prime is 1222133149. The reversal of 1222133112 is 2113312221.

It is a tau number, because it is divible by the number of its divisors (24).

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8486964 + ... + 8487107.

It is an arithmetic number, because the mean of its divisors is an integer number (137914335).

Almost surely, 2^1222133112 is an apocalyptic number.

1222133112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222133112 is an abundant number, since it is smaller than the sum of its proper divisors (2087810928).

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

1222133112 is a wasteful number, since it uses less digits than its factorization.

1222133112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16974083 (or 16974076 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1222133112 is about 34959.0204668266. The cubic root of 1222133112 is about 1069.1521253583.

Adding to 1222133112 its reverse (2113312221), we get a palindrome (3335445333).

The spelling of 1222133112 in words is "one billion, two hundred twenty-two million, one hundred thirty-three thousand, one hundred twelve".