11111216013 has 16 divisors (see below), whose sum is σ = 16992064000. Its totient is φ = 7168525920.

The previous prime is 11111215967. The next prime is 11111216101. The reversal of 11111216013 is 31061211111.

It is not a de Polignac number, because 11111216013 - 2⁸ = 11111215757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111215013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6636688 + ... + 6638361.

It is an arithmetic number, because the mean of its divisors is an integer number (1062004000).

Almost surely, 2^11111216013 is an apocalyptic number.

It is an amenable number.

11111216013 is a deficient number, since it is larger than the sum of its proper divisors (5880847987).

11111216013 is a wasteful number, since it uses less digits than its factorization.

11111216013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275089 (or 13275083 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 11111216013 its reverse (31061211111), we get a palindrome (42172427124).

The spelling of 11111216013 in words is "eleven billion, one hundred eleven million, two hundred sixteen thousand, thirteen".