111012021000221 has 32 divisors (see below), whose sum is σ = 126630213304320. Its totient is φ = 96399941601600.

The previous prime is 111012021000161. The next prime is 111012021000233. The reversal of 111012021000221 is 122000120210111.

It is a cyclic number.

It is not a de Polignac number, because 111012021000221 - 2⁶ = 111012021000157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012021000196 and 111012021000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012021000241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91339106 + ... + 92546508.

It is an arithmetic number, because the mean of its divisors is an integer number (3957194165760).

Almost surely, 2^{111012021000221} is an apocalyptic number.

111012021000221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111012021000221 is a deficient number, since it is larger than the sum of its proper divisors (15618192304099).

111012021000221 is a wasteful number, since it uses less digits than its factorization.

111012021000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210937.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111012021000221 its reverse (122000120210111), we get a palindrome (233012141210332).

The spelling of 111012021000221 in words is "one hundred eleven trillion, twelve billion, twenty-one million, two hundred twenty-one", and thus it is an aban number.