1121111012200 has 48 divisors (see below), whose sum is σ = 2759911529580. Its totient is φ = 422065320960.

The previous prime is 1121111012167. The next prime is 1121111012201. The reversal of 1121111012200 is 22101111211.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 185414637604 + 935696374596 = 430598^2 + 967314^2 .

It is a super-2 number, since 2×1121111012200² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121111012201) 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, 164865867 + ... + 164872666.

Almost surely, 2^{1121111012200} is an apocalyptic number.

1121111012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121111012200 is an abundant number, since it is smaller than the sum of its proper divisors (1638800517380).

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

1121111012200 is a wasteful number, since it uses less digits than its factorization.

1121111012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329738566 (or 329738557 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1121111012200 its reverse (22101111211), we get a palindrome (1143212123411).

The spelling of 1121111012200 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, twelve thousand, two hundred".