111210000121020 has 96 divisors (see below), whose sum is σ = 322129657281600. Its totient is φ = 28633011369984.

The previous prime is 111210000120997. The next prime is 111210000121061. The reversal of 111210000121020 is 20121000012111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111210000120987 and 111210000121005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151077216 + ... + 151811544.

It is an arithmetic number, because the mean of its divisors is an integer number (3355517263350).

Almost surely, 2^{111210000121020} is an apocalyptic number.

111210000121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210000121020 is an abundant number, since it is smaller than the sum of its proper divisors (210919657160580).

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

111210000121020 is a wasteful number, since it uses less digits than its factorization.

111210000121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821407 (or 821405 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111210000121020 its reverse (20121000012111), we get a palindrome (131331000133131).

The spelling of 111210000121020 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-one thousand, twenty".