1122200400 has 60 divisors (see below), whose sum is σ = 3594785792. Its totient is φ = 299253120.

The previous prime is 1122200393. The next prime is 1122200411. The reversal of 1122200400 is 40022211.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466384 + ... + 468783.

Almost surely, 2^1122200400 is an apocalyptic number.

1122200400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122200400 is an abundant number, since it is smaller than the sum of its proper divisors (2472585392).

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

1122200400 is a wasteful number, since it uses less digits than its factorization.

1122200400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935188 (or 935177 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1122200400 is about 33499.2596933126. The cubic root of 1122200400 is about 1039.1784685722.

Adding to 1122200400 its reverse (40022211), we get a palindrome (1162222611).

The spelling of 1122200400 in words is "one billion, one hundred twenty-two million, two hundred thousand, four hundred".