111001201221312 has 84 divisors (see below), whose sum is σ = 318549624551496. Its totient is φ = 36955659740160.

The previous prime is 111001201221307. The next prime is 111001201221349. The reversal of 111001201221312 is 213122102100111.

It is a happy number.

111001201221312 is a `hidden beast` number, since 1 + 1 + 10 + 0 + 120 + 1 + 221 + 312 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116035389 + ... + 116988092.

Almost surely, 2^{111001201221312} is an apocalyptic number.

111001201221312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111001201221312 is an abundant number, since it is smaller than the sum of its proper divisors (207548423330184).

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

111001201221312 is a wasteful number, since it uses less digits than its factorization.

111001201221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233024326 (or 233024313 counting only the distinct ones).

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

Adding to 111001201221312 its reverse (213122102100111), we get a palindrome (324123303321423).

The spelling of 111001201221312 in words is "one hundred eleven trillion, one billion, two hundred one million, two hundred twenty-one thousand, three hundred twelve".