11111212014 has 64 divisors (see below), whose sum is σ = 26299994112. Its totient is φ = 3062419200.

The previous prime is 11111212009. The next prime is 11111212043. The reversal of 11111212014 is 41021211111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11111211984 and 11111212002.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 399274 + ... + 426194.

It is an arithmetic number, because the mean of its divisors is an integer number (410937408).

Almost surely, 2^11111212014 is an apocalyptic number.

11111212014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111212014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13149997056).

11111212014 is an abundant number, since it is smaller than the sum of its proper divisors (15188782098).

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

11111212014 is a wasteful number, since it uses less digits than its factorization.

11111212014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27281.

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

Adding to 11111212014 its reverse (41021211111), we get a palindrome (52132423125).

The spelling of 11111212014 in words is "eleven billion, one hundred eleven million, two hundred twelve thousand, fourteen".