111322213222221 has 6 divisors (see below), whose sum is σ = 160798752432110. Its totient is φ = 74214808814808.

The previous prime is 111322213222193. The next prime is 111322213222223. The reversal of 111322213222221 is 122222312223111.

111322213222221 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 2 + 2 + 213 + 222 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72857235566025 + 38464977656196 = 8535645^2 + 6202014^2 .

It is not a de Polignac number, because 111322213222221 - 2¹⁴ = 111322213205837 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 (111322213222223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6184567401226 + ... + 6184567401243.

Almost surely, 2^{111322213222221} is an apocalyptic number.

It is an amenable number.

111322213222221 is a deficient number, since it is larger than the sum of its proper divisors (49476539209889).

111322213222221 is a wasteful number, since it uses less digits than its factorization.

111322213222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12369134802475 (or 12369134802472 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 111322213222221 its reverse (122222312223111), we get a palindrome (233544525445332).

The spelling of 111322213222221 in words is "one hundred eleven trillion, three hundred twenty-two billion, two hundred thirteen million, two hundred twenty-two thousand, two hundred twenty-one".