111121212212212 has 96 divisors (see below), whose sum is σ = 212787092496384. Its totient is φ = 50547414528000.

The previous prime is 111121212212209. The next prime is 111121212212249. The reversal of 111121212212212 is 212212212121111.

It is a super-2 number, since 2×111121212212212² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7209569418 + ... + 7209584830.

It is an arithmetic number, because the mean of its divisors is an integer number (2216532213504).

Almost surely, 2^{111121212212212} is an apocalyptic number.

It is an amenable number.

111121212212212 is a deficient number, since it is larger than the sum of its proper divisors (101665880284172).

111121212212212 is a wasteful number, since it uses less digits than its factorization.

111121212212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19169 (or 19167 counting only the distinct ones).

The product of its digits is 128, while the sum is 22.

Adding to 111121212212212 its reverse (212212212121111), we get a palindrome (323333424333323).

The spelling of 111121212212212 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, two hundred twelve".