11112112100 has 18 divisors (see below), whose sum is σ = 24113283474. Its totient is φ = 4444844800.

The previous prime is 11112112093. The next prime is 11112112139. The reversal of 11112112100 is 121121111.

It can be written as a sum of positive squares in 3 ways, for example, as 3211035556 + 7901076544 = 56666^2 + 88888^2 .

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 5 ways as a sum of consecutive naturals, for example, 55560461 + ... + 55560660.

Almost surely, 2^11112112100 is an apocalyptic number.

11112112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112112100 is an abundant number, since it is smaller than the sum of its proper divisors (13001171374).

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

11112112100 is a wasteful number, since it uses less digits than its factorization.

11112112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111121135 (or 111121128 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112112100 its reverse (121121111), we get a palindrome (11233233211).

The spelling of 11112112100 in words is "eleven billion, one hundred twelve million, one hundred twelve thousand, one hundred".