1111001001100 has 54 divisors (see below), whose sum is σ = 2544438580404. Its totient is φ = 421010892000.

The previous prime is 1111001001013. The next prime is 1111001001107. The reversal of 1111001001100 is 11001001111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1111001001107) 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, 15351726 + ... + 15423925.

Almost surely, 2^{1111001001100} is an apocalyptic number.

1111001001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111001001100 is an abundant number, since it is smaller than the sum of its proper divisors (1433437579304).

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

1111001001100 is a wasteful number, since it uses less digits than its factorization.

1111001001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30775703 (or 30775677 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1111001001100 its reverse (11001001111), we get a palindrome (1122002002211).

The spelling of 1111001001100 in words is "one trillion, one hundred eleven billion, one million, one thousand, one hundred".