1122121224 has 48 divisors (see below), whose sum is σ = 3473233920. Its totient is φ = 320605920.

The previous prime is 1122121223. The next prime is 1122121267. The reversal of 1122121224 is 4221212211.

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 junction number, because it is equal to n+sod(n) for n = 1122121197 and 1122121206.

It is not an unprimeable number, because it can be changed into a prime (1122121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112712 + ... + 1113719.

It is an arithmetic number, because the mean of its divisors is an integer number (72359040).

Almost surely, 2^1122121224 is an apocalyptic number.

1122121224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1122121224 is an abundant number, since it is smaller than the sum of its proper divisors (2351112696).

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

1122121224 is a wasteful number, since it uses less digits than its factorization.

1122121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226450 (or 2226443 counting only the distinct ones).

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

The square root of 1122121224 is about 33498.0779150088. The cubic root of 1122121224 is about 1039.1540285139.

Adding to 1122121224 its reverse (4221212211), we get a palindrome (5343333435).

The spelling of 1122121224 in words is "one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-four".