1122001200 has 120 divisors (see below), whose sum is σ = 3993531600. Its totient is φ = 299197440.

The previous prime is 1122001183. The next prime is 1122001211. The reversal of 1122001200 is 21002211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41145 + ... + 62744.

It is an arithmetic number, because the mean of its divisors is an integer number (33279430).

Almost surely, 2^1122001200 is an apocalyptic number.

1122001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122001200 is an abundant number, since it is smaller than the sum of its proper divisors (2871530400).

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

1122001200 is a wasteful number, since it uses less digits than its factorization.

1122001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103916 (or 103899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1122001200 is about 33496.2863613267. The cubic root of 1122001200 is about 1039.1169772971.

Adding to 1122001200 its reverse (21002211), we get a palindrome (1143003411).

The spelling of 1122001200 in words is "one billion, one hundred twenty-two million, one thousand, two hundred".