111210111012 has 768 divisors, whose sum is σ = 389193154560. Its totient is φ = 23755161600.

The previous prime is 111210111011. The next prime is 111210111013. The reversal of 111210111012 is 210111012111.

It is an interprime number because it is at equal distance from previous prime (111210111011) and next prime (111210111013).

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 (111210111011) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 309777289 + ... + 309777647.

It is an arithmetic number, because the mean of its divisors is an integer number (506761920).

Almost surely, 2^111210111012 is an apocalyptic number.

111210111012 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 111210111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194596577280).

111210111012 is an abundant number, since it is smaller than the sum of its proper divisors (277983043548).

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

111210111012 is a wasteful number, since it uses less digits than its factorization.

111210111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

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

Adding to 111210111012 its reverse (210111012111), we get a palindrome (321321123123).

It can be divided in two parts, 111210 and 111012, that added together give a palindrome (222222).

The spelling of 111210111012 in words is "one hundred eleven billion, two hundred ten million, one hundred eleven thousand, twelve".