111100220000121 has 8 divisors (see below), whose sum is σ = 161600320000224. Its totient is φ = 67333466666720.

The previous prime is 111100220000111. The next prime is 111100220000129. The reversal of 111100220000121 is 121000022001111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111100220000121 - 2²³ = 111100211611513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111100220000097 and 111100220000106.

It is not an unprimeable number, because it can be changed into a prime (111100220000129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1683336666636 + ... + 1683336666701.

It is an arithmetic number, because the mean of its divisors is an integer number (20200040000028).

Almost surely, 2^{111100220000121} is an apocalyptic number.

111100220000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111100220000121 is a deficient number, since it is larger than the sum of its proper divisors (50500100000103).

111100220000121 is a wasteful number, since it uses less digits than its factorization.

111100220000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366673333351.

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

Adding to 111100220000121 its reverse (121000022001111), we get a palindrome (232100242001232).

The spelling of 111100220000121 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty million, one hundred twenty-one", and thus it is an aban number.