11112211112100 has 288 divisors, whose sum is σ = 37309992007680. Its totient is φ = 2501120778240.

The previous prime is 11112211112069. The next prime is 11112211112221. The reversal of 11112211112100 is 121111221111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11112211112100.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37376836 + ... + 37672964.

It is an arithmetic number, because the mean of its divisors is an integer number (129548583360).

Almost surely, 2^{11112211112100} is an apocalyptic number.

11112211112100 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 11112211112100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18654996003840).

11112211112100 is an abundant number, since it is smaller than the sum of its proper divisors (26197780895580).

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

11112211112100 is a wasteful number, since it uses less digits than its factorization.

11112211112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296427 (or 296420 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11112211112100 its reverse (121111221111), we get a palindrome (11233322333211).

The spelling of 11112211112100 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, one hundred twelve thousand, one hundred".