11100111221012 has 60 divisors (see below), whose sum is σ = 21374393661600. Its totient is φ = 5043896586960.

The previous prime is 11100111221009. The next prime is 11100111221047. The reversal of 11100111221012 is 21012211100111.

It is a super-3 number, since 3×11100111221012³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 194345363 + ... + 194402469.

It is an arithmetic number, because the mean of its divisors is an integer number (356239894360).

Almost surely, 2^{11100111221012} is an apocalyptic number.

It is an amenable number.

11100111221012 is a deficient number, since it is larger than the sum of its proper divisors (10274282440588).

11100111221012 is an equidigital number, since it uses as much as digits as its factorization.

11100111221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60474 (or 60439 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11100111221012 its reverse (21012211100111), we get a palindrome (32112322321123).

The spelling of 11100111221012 in words is "eleven trillion, one hundred billion, one hundred eleven million, two hundred twenty-one thousand, twelve".