11101111212 has 24 divisors (see below), whose sum is σ = 25904435200. Its totient is φ = 3700107216.

The previous prime is 11101111183. The next prime is 11101111261. The reversal of 11101111212 is 21211110111.

11101111212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221589 + ... + 267027.

Almost surely, 2^11101111212 is an apocalyptic number.

11101111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11101111212 is an abundant number, since it is smaller than the sum of its proper divisors (14803323988).

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

11101111212 is a wasteful number, since it uses less digits than its factorization.

11101111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65805 (or 65803 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11101111212 its reverse (21211110111), we get a palindrome (32312221323).

The spelling of 11101111212 in words is "eleven billion, one hundred one million, one hundred eleven thousand, two hundred twelve".