1122255200 has 72 divisors (see below), whose sum is σ = 2988793080. Its totient is φ = 408089600.

The previous prime is 1122255179. The next prime is 1122255203. The reversal of 1122255200 is 25522211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122255203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54965 + ... + 72564.

It is an arithmetic number, because the mean of its divisors is an integer number (41511015).

Almost surely, 2^1122255200 is an apocalyptic number.

1122255200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122255200 is an abundant number, since it is smaller than the sum of its proper divisors (1866537880).

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

1122255200 is a wasteful number, since it uses less digits than its factorization.

1122255200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127560 (or 127547 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1122255200 is about 33500.0776118504. The cubic root of 1122255200 is about 1039.1953835704.

Adding to 1122255200 its reverse (25522211), we get a palindrome (1147777411).

The spelling of 1122255200 in words is "one billion, one hundred twenty-two million, two hundred fifty-five thousand, two hundred".