111211021100120 has 16 divisors (see below), whose sum is σ = 250224797475360. Its totient is φ = 44484408440032.

The previous prime is 111211021100107. The next prime is 111211021100167. The reversal of 111211021100120 is 21001120112111.

It is a junction number, because it is equal to n+sod(n) for n = 111211021100095 and 111211021100104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390137763712 + ... + 1390137763791.

It is an arithmetic number, because the mean of its divisors is an integer number (15639049842210).

Almost surely, 2^{111211021100120} is an apocalyptic number.

111211021100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211021100120 is an abundant number, since it is smaller than the sum of its proper divisors (139013776375240).

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

111211021100120 is a wasteful number, since it uses less digits than its factorization.

111211021100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780275527514 (or 2780275527510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111211021100120 its reverse (21001120112111), we get a palindrome (132212141212231).

The spelling of 111211021100120 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-one million, one hundred thousand, one hundred twenty".