111011220001212 has 24 divisors (see below), whose sum is σ = 266026887571536. Its totient is φ = 36003638919168.

The previous prime is 111011220001207. The next prime is 111011220001247. The reversal of 111011220001212 is 212100022110111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111011220001191 and 111011220001200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125012634693 + ... + 125012635580.

It is an arithmetic number, because the mean of its divisors is an integer number (11084453648814).

Almost surely, 2^{111011220001212} is an apocalyptic number.

111011220001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111011220001212 is an abundant number, since it is smaller than the sum of its proper divisors (155015667570324).

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

111011220001212 is a wasteful number, since it uses less digits than its factorization.

111011220001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250025270317 (or 250025270315 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111011220001212 its reverse (212100022110111), we get a palindrome (323111242111323).

The spelling of 111011220001212 in words is "one hundred eleven trillion, eleven billion, two hundred twenty million, one thousand, two hundred twelve".