111311122212 has 48 divisors (see below), whose sum is σ = 288940456000. Its totient is φ = 37057927680.

The previous prime is 111311122177. The next prime is 111311122217. The reversal of 111311122212 is 212221113111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is not an unprimeable number, because it can be changed into a prime (111311122217) 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, 547837 + ... + 723012.

Almost surely, 2^111311122212 is an apocalyptic number.

111311122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111311122212 is an abundant number, since it is smaller than the sum of its proper divisors (177629333788).

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

111311122212 is a wasteful number, since it uses less digits than its factorization.

111311122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271673 (or 1271665 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 111311122212 its reverse (212221113111), we get a palindrome (323532235323).

The spelling of 111311122212 in words is "one hundred eleven billion, three hundred eleven million, one hundred twenty-two thousand, two hundred twelve".