111061220221 has 8 divisors (see below), whose sum is σ = 131303905920. Its totient is φ = 91912733808.

The previous prime is 111061220191. The next prime is 111061220273. The reversal of 111061220221 is 122022160111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111061220221 - 2²¹ = 111059123069 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 (111061220021) 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, 273549601 + ... + 273550006.

It is an arithmetic number, because the mean of its divisors is an integer number (16412988240).

Almost surely, 2^111061220221 is an apocalyptic number.

It is an amenable number.

111061220221 is a deficient number, since it is larger than the sum of its proper divisors (20242685699).

111061220221 is an equidigital number, since it uses as much as digits as its factorization.

111061220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547099643.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111061220221 its reverse (122022160111), we get a palindrome (233083380332).

The spelling of 111061220221 in words is "one hundred eleven billion, sixty-one million, two hundred twenty thousand, two hundred twenty-one".