11111000012100 has 108 divisors (see below), whose sum is σ = 34834756057920. Its totient is φ = 2962257508800.

The previous prime is 11111000012089. The next prime is 11111000012113. The reversal of 11111000012100 is 121000011111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2546121 + ... + 5357679.

Almost surely, 2^{11111000012100} is an apocalyptic number.

11111000012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111000012100 is an abundant number, since it is smaller than the sum of its proper divisors (23723756045820).

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

11111000012100 is a wasteful number, since it uses less digits than its factorization.

11111000012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815970 (or 2815960 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11111000012100 its reverse (121000011111), we get a palindrome (11232000023211).

The spelling of 11111000012100 in words is "eleven trillion, one hundred eleven billion, twelve thousand, one hundred".