111112102020221 has 8 divisors (see below), whose sum is σ = 114698510828544. Its totient is φ = 107525827427760.

The previous prime is 111112102020211. The next prime is 111112102020239. The reversal of 111112102020221 is 122020201211111.

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 111112102020221 - 2¹⁰ = 111112102019197 is a prime.

It is a super-3 number, since 3×111112102020221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111112102020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112102020211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31870181 + ... + 35184266.

It is an arithmetic number, because the mean of its divisors is an integer number (14337313853568).

Almost surely, 2^{111112102020221} is an apocalyptic number.

It is an amenable number.

111112102020221 is a deficient number, since it is larger than the sum of its proper divisors (3586408808323).

111112102020221 is an equidigital number, since it uses as much as digits as its factorization.

111112102020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67107931.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111112102020221 its reverse (122020201211111), we get a palindrome (233132303231332).

The spelling of 111112102020221 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred two million, twenty thousand, two hundred twenty-one".