111222210221 has 8 divisors (see below), whose sum is σ = 111795288000. Its totient is φ = 110649274560.

The previous prime is 111222210163. The next prime is 111222210259. The reversal of 111222210221 is 122012222111.

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 111222210221 - 2²² = 111218015917 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 111222210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222212221) 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, 1768250 + ... + 1830068.

It is an arithmetic number, because the mean of its divisors is an integer number (13974411000).

Almost surely, 2^111222210221 is an apocalyptic number.

It is an amenable number.

111222210221 is a deficient number, since it is larger than the sum of its proper divisors (573077779).

111222210221 is an equidigital number, since it uses as much as digits as its factorization.

111222210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71059.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111222210221 its reverse (122012222111), we get a palindrome (233234432332).

The spelling of 111222210221 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".