111111010212 has 96 divisors (see below), whose sum is σ = 269953415424. Its totient is φ = 35539776000.

The previous prime is 111111010211. The next prime is 111111010217. The reversal of 111111010212 is 212010111111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (111111010211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11789262 + ... + 11798682.

It is an arithmetic number, because the mean of its divisors is an integer number (2812014744).

Almost surely, 2^111111010212 is an apocalyptic number.

111111010212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111010212 is an abundant number, since it is smaller than the sum of its proper divisors (158842405212).

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

111111010212 is a wasteful number, since it uses less digits than its factorization.

111111010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829 (or 9827 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111111010212 its reverse (212010111111), we get a palindrome (323121121323).

The spelling of 111111010212 in words is "one hundred eleven billion, one hundred eleven million, ten thousand, two hundred twelve".