111230211312 has 640 divisors, whose sum is σ = 395974656000. Its totient is φ = 29474565120.

The previous prime is 111230211277. The next prime is 111230211371. The reversal of 111230211312 is 213112032111.

111230211312 is a `hidden beast` number, since 1 + 112 + 30 + 211 + 312 = 666.

It is a super-2 number, since 2×111230211312² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 60221173 + ... + 60223019.

It is an arithmetic number, because the mean of its divisors is an integer number (618710400).

Almost surely, 2^111230211312 is an apocalyptic number.

111230211312 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 111230211312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197987328000).

111230211312 is an abundant number, since it is smaller than the sum of its proper divisors (284744444688).

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

111230211312 is a wasteful number, since it uses less digits than its factorization.

111230211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111230211312 its reverse (213112032111), we get a palindrome (324342243423).

The spelling of 111230211312 in words is "one hundred eleven billion, two hundred thirty million, two hundred eleven thousand, three hundred twelve".