11121211300 has 54 divisors (see below), whose sum is σ = 25636190342. Its totient is φ = 4186798080.

The previous prime is 11121211291. The next prime is 11121211301. The reversal of 11121211300 is 311212111.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 1654699684 + 9466511616 = 40678^2 + 97296^2 .

It is not an unprimeable number, because it can be changed into a prime (11121211301) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163509 + ... + 221308.

Almost surely, 2^11121211300 is an apocalyptic number.

11121211300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121211300 is an abundant number, since it is smaller than the sum of its proper divisors (14514979042).

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

11121211300 is a wasteful number, since it uses less digits than its factorization.

11121211300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384865 (or 384841 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11121211300 its reverse (311212111), we get a palindrome (11432423411).

The spelling of 11121211300 in words is "eleven billion, one hundred twenty-one million, two hundred eleven thousand, three hundred".