1111201100 has 18 divisors (see below), whose sum is σ = 2411306604. Its totient is φ = 444480400.

The previous prime is 1111201087. The next prime is 1111201121. The reversal of 1111201100 is 11021111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5555906 + ... + 5556105.

It is an arithmetic number, because the mean of its divisors is an integer number (133961478).

Almost surely, 2^1111201100 is an apocalyptic number.

1111201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111201100 is an abundant number, since it is smaller than the sum of its proper divisors (1300105504).

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

1111201100 is a wasteful number, since it uses less digits than its factorization.

1111201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112025 (or 11112018 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1111201100 is about 33334.6831393370. The cubic root of 1111201100 is about 1035.7721295365.

Adding to 1111201100 its reverse (11021111), we get a palindrome (1122222211).

The spelling of 1111201100 in words is "one billion, one hundred eleven million, two hundred one thousand, one hundred".