1122252144 has 160 divisors (see below), whose sum is σ = 3357285120. Its totient is φ = 319942656.

The previous prime is 1122252139. The next prime is 1122252151. The reversal of 1122252144 is 4412522211.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 709947 + ... + 711525.

It is an arithmetic number, because the mean of its divisors is an integer number (20983032).

Almost surely, 2^1122252144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122252144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678642560).

1122252144 is an abundant number, since it is smaller than the sum of its proper divisors (2235032976).

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

1122252144 is a wasteful number, since it uses less digits than its factorization.

1122252144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1681 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 1122252144 is about 33500.0319999847. The cubic root of 1122252144 is about 1039.1944402959.

Adding to 1122252144 its reverse (4412522211), we get a palindrome (5534774355).

The spelling of 1122252144 in words is "one billion, one hundred twenty-two million, two hundred fifty-two thousand, one hundred forty-four".