1111112112100 has 18 divisors (see below), whose sum is σ = 2411113283474. Its totient is φ = 444444844800.

The previous prime is 1111112112083. The next prime is 1111112112157. The reversal of 1111112112100 is 12112111111.

It can be written as a sum of positive squares in 3 ways, for example, as 20725057444 + 1090387054656 = 143962^2 + 1044216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5555560461 + ... + 5555560660.

Almost surely, 2^{1111112112100} is an apocalyptic number.

1111112112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111112112100 is an abundant number, since it is smaller than the sum of its proper divisors (1300001171374).

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

1111112112100 is a wasteful number, since it uses less digits than its factorization.

1111112112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111121135 (or 11111121128 counting only the distinct ones).

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

Adding to 1111112112100 its reverse (12112111111), we get a palindrome (1123224223211).

The spelling of 1111112112100 in words is "one trillion, one hundred eleven billion, one hundred twelve million, one hundred twelve thousand, one hundred".