11121111210100 has 72 divisors (see below), whose sum is σ = 24279203406528. Its totient is φ = 4421463916800.

The previous prime is 11121111210061. The next prime is 11121111210107. The reversal of 11121111210100 is 101211112111.

It is a super-2 number, since 2×11121111210100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121111210107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408685495 + ... + 408712705.

It is an arithmetic number, because the mean of its divisors is an integer number (337211158424).

Almost surely, 2^{11121111210100} is an apocalyptic number.

11121111210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11121111210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12139601703264).

11121111210100 is an abundant number, since it is smaller than the sum of its proper divisors (13158092196428).

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

11121111210100 is a wasteful number, since it uses less digits than its factorization.

11121111210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51865 (or 51858 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11121111210100 its reverse (101211112111), we get a palindrome (11222322322211).

The spelling of 11121111210100 in words is "eleven trillion, one hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, one hundred".