11100111210 has 112 divisors (see below), whose sum is σ = 30249483264. Its totient is φ = 2931093216.

The previous prime is 11100111181. The next prime is 11100111227. The reversal of 11100111210 is 1211100111.

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

It is a junction number, because it is equal to n+sod(n) for n = 11100111192 and 11100111201.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 743479 + ... + 758261.

It is an arithmetic number, because the mean of its divisors is an integer number (270084672).

Almost surely, 2^11100111210 is an apocalyptic number.

11100111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11100111210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15124741632).

11100111210 is an abundant number, since it is smaller than the sum of its proper divisors (19149372054).

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

11100111210 is a wasteful number, since it uses less digits than its factorization.

11100111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14911 (or 14896 counting only the distinct ones).

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

Adding to 11100111210 its reverse (1211100111), we get a palindrome (12311211321).

The spelling of 11100111210 in words is "eleven billion, one hundred million, one hundred eleven thousand, two hundred ten".