111340020221 has 4 divisors (see below), whose sum is σ = 111348113244. Its totient is φ = 111331927200.

The previous prime is 111340020179. The next prime is 111340020223. The reversal of 111340020221 is 122020043111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122020043111 = 37 ⋅3297839003.

It can be written as a sum of positive squares in 2 ways, for example, as 32539108996 + 78800911225 = 180386^2 + 280715^2 .

It is a cyclic number.

It is not a de Polignac number, because 111340020221 - 2⁶ = 111340020157 is a prime.

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 111340020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111340020223) 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, 4025840 + ... + 4053401.

It is an arithmetic number, because the mean of its divisors is an integer number (27837028311).

Almost surely, 2^111340020221 is an apocalyptic number.

It is an amenable number.

111340020221 is a deficient number, since it is larger than the sum of its proper divisors (8093023).

111340020221 is an equidigital number, since it uses as much as digits as its factorization.

111340020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093022.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 111340020221 its reverse (122020043111), we get a palindrome (233360063332).

The spelling of 111340020221 in words is "one hundred eleven billion, three hundred forty million, twenty thousand, two hundred twenty-one".