111010210112221 has 4 divisors (see below), whose sum is σ = 126868811556832. Its totient is φ = 95151608667612.

The previous prime is 111010210112213. The next prime is 111010210112239. The reversal of 111010210112221 is 122211012010111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111010210112221 - 2³ = 111010210112213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010210112195 and 111010210112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010210112251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7929300722295 + ... + 7929300722308.

It is an arithmetic number, because the mean of its divisors is an integer number (31717202889208).

Almost surely, 2^{111010210112221} is an apocalyptic number.

It is an amenable number.

111010210112221 is a deficient number, since it is larger than the sum of its proper divisors (15858601444611).

111010210112221 is an equidigital number, since it uses as much as digits as its factorization.

111010210112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15858601444610.

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

Adding to 111010210112221 its reverse (122211012010111), we get a palindrome (233221222122332).

The spelling of 111010210112221 in words is "one hundred eleven trillion, ten billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".