111212212116 has 48 divisors (see below), whose sum is σ = 263610596480. Its totient is φ = 36487324800.

The previous prime is 111212212109. The next prime is 111212212129. The reversal of 111212212116 is 611212212111.

It is a super-2 number, since 2×111212212116² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 111212212092 and 111212212101.

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, 84031 + ... + 479046.

Almost surely, 2^111212212116 is an apocalyptic number.

It is an amenable number.

111212212116 is an abundant number, since it is smaller than the sum of its proper divisors (152398384364).

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

111212212116 is a wasteful number, since it uses less digits than its factorization.

111212212116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563344 (or 563342 counting only the distinct ones).

The product of its digits is 96, while the sum is 21.

Adding to 111212212116 its reverse (611212212111), we get a palindrome (722424424227).

The spelling of 111212212116 in words is "one hundred eleven billion, two hundred twelve million, two hundred twelve thousand, one hundred sixteen".