11111041212 has 48 divisors (see below), whose sum is σ = 26673303552. Its totient is φ = 3598404480.

The previous prime is 11111041187. The next prime is 11111041301. The reversal of 11111041212 is 21214011111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11111041191 and 11111041200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35964 + ... + 153347.

It is an arithmetic number, because the mean of its divisors is an integer number (555693824).

Almost surely, 2^11111041212 is an apocalyptic number.

11111041212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111041212 is an abundant number, since it is smaller than the sum of its proper divisors (15562262340).

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

11111041212 is a wasteful number, since it uses less digits than its factorization.

11111041212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189458 (or 189456 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111041212 its reverse (21214011111), we get a palindrome (32325052323).

The spelling of 11111041212 in words is "eleven billion, one hundred eleven million, forty-one thousand, two hundred twelve".