11115100212 has 24 divisors (see below), whose sum is σ = 26109300000. Its totient is φ = 3680166816.

The previous prime is 11115100207. The next prime is 11115100219. The reversal of 11115100212 is 21200151111.

It is a junction number, because it is equal to n+sod(n) for n = 11115100191 and 11115100200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115100219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3106462 + ... + 3110037.

It is an arithmetic number, because the mean of its divisors is an integer number (1087887500).

Almost surely, 2^11115100212 is an apocalyptic number.

11115100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11115100212 is an abundant number, since it is smaller than the sum of its proper divisors (14994199788).

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

11115100212 is a wasteful number, since it uses less digits than its factorization.

11115100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216655 (or 6216653 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 11115100212 its reverse (21200151111), we get a palindrome (32315251323).

The spelling of 11115100212 in words is "eleven billion, one hundred fifteen million, one hundred thousand, two hundred twelve".