116211111 has 16 divisors (see below), whose sum is σ = 161940480. Its totient is φ = 73988640.

The previous prime is 116211107. The next prime is 116211143. The reversal of 116211111 is 111112611.

It is not a de Polignac number, because 116211111 - 2² = 116211107 is a prime.

116211111 is a modest number, since divided by 11111 gives 1162 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116211101) 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, 70881 + ... + 72501.

It is an arithmetic number, because the mean of its divisors is an integer number (10121280).

Almost surely, 2^116211111 is an apocalyptic number.

116211111 is a deficient number, since it is larger than the sum of its proper divisors (45729369).

116211111 is a wasteful number, since it uses less digits than its factorization.

116211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686.

The product of its digits is 12, while the sum is 15.

The square root of 116211111 is about 10780.1257413817. The cubic root of 116211111 is about 487.9955754660.

Adding to 116211111 its reverse (111112611), we get a palindrome (227323722).

The spelling of 116211111 in words is "one hundred sixteen million, two hundred eleven thousand, one hundred eleven".