1122012144 has 120 divisors (see below), whose sum is σ = 3448957824. Its totient is φ = 337680000.

The previous prime is 1122012137. The next prime is 1122012163. The reversal of 1122012144 is 4412102211.

It is a super-2 number, since 2×1122012144² = 2517822502566953472, which contains 22 as substring.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236839 + ... + 241529.

Almost surely, 2^1122012144 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 1122012144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724478912).

1122012144 is an abundant number, since it is smaller than the sum of its proper divisors (2326945680).

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

1122012144 is a wasteful number, since it uses less digits than its factorization.

1122012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867 (or 4858 counting only the distinct ones).

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

The square root of 1122012144 is about 33496.4497223213. The cubic root of 1122012144 is about 1039.1203558019.

Adding to 1122012144 its reverse (4412102211), we get a palindrome (5534114355).

The spelling of 1122012144 in words is "one billion, one hundred twenty-two million, twelve thousand, one hundred forty-four".