111012020000221 has 16 divisors (see below), whose sum is σ = 115984959989760. Its totient is φ = 106051341876480.

The previous prime is 111012020000213. The next prime is 111012020000311. The reversal of 111012020000221 is 122000020210111.

It is a cyclic number.

It is not a de Polignac number, because 111012020000221 - 2³ = 111012020000213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012020000201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71608261 + ... + 73142101.

It is an arithmetic number, because the mean of its divisors is an integer number (7249059999360).

Almost surely, 2^{111012020000221} is an apocalyptic number.

It is an amenable number.

111012020000221 is a deficient number, since it is larger than the sum of its proper divisors (4972939989539).

111012020000221 is a wasteful number, since it uses less digits than its factorization.

111012020000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537836.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111012020000221 its reverse (122000020210111), we get a palindrome (233012040210332).

The spelling of 111012020000221 in words is "one hundred eleven trillion, twelve billion, twenty million, two hundred twenty-one", and thus it is an aban number.