111220122001212 has 108 divisors (see below), whose sum is σ = 335879043023160. Its totient is φ = 30918335055552.

The previous prime is 111220122001201. The next prime is 111220122001379. The reversal of 111220122001212 is 212100221022111.

111220122001212 is a `hidden beast` number, since 1 + 11 + 220 + 1 + 220 + 0 + 1 + 212 = 666.

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 35 ways as a sum of consecutive naturals, for example, 851961162 + ... + 852091697.

Almost surely, 2^{111220122001212} is an apocalyptic number.

111220122001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111220122001212 is an abundant number, since it is smaller than the sum of its proper divisors (224658921021948).

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

111220122001212 is a wasteful number, since it uses less digits than its factorization.

111220122001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704052920 (or 1704052908 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111220122001212 its reverse (212100221022111), we get a palindrome (323320343023323).

The spelling of 111220122001212 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-two million, one thousand, two hundred twelve".