111100122001212 has 24 divisors (see below), whose sum is σ = 264124818344016. Its totient is φ = 36334631094528.

The previous prime is 111100122001157. The next prime is 111100122001223. The reversal of 111100122001212 is 212100221001111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111100122001191 and 111100122001200.

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, 87342862573 + ... + 87342863844.

It is an arithmetic number, because the mean of its divisors is an integer number (11005200764334).

Almost surely, 2^{111100122001212} is an apocalyptic number.

111100122001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111100122001212 is an abundant number, since it is smaller than the sum of its proper divisors (153024696342804).

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

111100122001212 is a wasteful number, since it uses less digits than its factorization.

111100122001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174685726477 (or 174685726475 counting only the distinct ones).

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

Adding to 111100122001212 its reverse (212100221001111), we get a palindrome (323200343002323).

The spelling of 111100122001212 in words is "one hundred eleven trillion, one hundred billion, one hundred twenty-two million, one thousand, two hundred twelve".