1121200104 has 48 divisors (see below), whose sum is σ = 2873136960. Its totient is φ = 364604800.

The previous prime is 1121200081. The next prime is 1121200141. The reversal of 1121200104 is 4010021211.

It is a happy number.

It is a super-2 number, since 2×1121200104² = 2514179346419221632, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1121200104.

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, 26449 + ... + 54239.

It is an arithmetic number, because the mean of its divisors is an integer number (59857020).

Almost surely, 2^1121200104 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 1121200104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436568480).

1121200104 is an abundant number, since it is smaller than the sum of its proper divisors (1751936856).

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

1121200104 is a wasteful number, since it uses less digits than its factorization.

1121200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27882 (or 27837 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1121200104 is about 33484.3262437816. The cubic root of 1121200104 is about 1038.8696125443.

Adding to 1121200104 its reverse (4010021211), we get a palindrome (5131221315).

The spelling of 1121200104 in words is "one billion, one hundred twenty-one million, two hundred thousand, one hundred four".