111110101212 has 96 divisors (see below), whose sum is σ = 291016986624. Its totient is φ = 32707168000.

The previous prime is 111110101211. The next prime is 111110101337. The reversal of 111110101212 is 212101011111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110101211) 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, 627973 + ... + 785219.

It is an arithmetic number, because the mean of its divisors is an integer number (3031426944).

Almost surely, 2^111110101212 is an apocalyptic number.

111110101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111110101212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145508493312).

111110101212 is an abundant number, since it is smaller than the sum of its proper divisors (179906885412).

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

111110101212 is a wasteful number, since it uses less digits than its factorization.

111110101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157419 (or 157417 counting only the distinct ones).

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

Adding to 111110101212 its reverse (212101011111), we get a palindrome (323211112323).

The spelling of 111110101212 in words is "one hundred eleven billion, one hundred ten million, one hundred one thousand, two hundred twelve".