111010221221 has 8 divisors (see below), whose sum is σ = 118638743040. Its totient is φ = 103503755968.

The previous prime is 111010221197. The next prime is 111010221229. The reversal of 111010221221 is 122122010111.

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 111010221221 - 2¹⁰ = 111010220197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111010221196 and 111010221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010221229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30512261 + ... + 30515898.

It is an arithmetic number, because the mean of its divisors is an integer number (14829842880).

Almost surely, 2^111010221221 is an apocalyptic number.

It is an amenable number.

111010221221 is a deficient number, since it is larger than the sum of its proper divisors (7628521819).

111010221221 is a wasteful number, since it uses less digits than its factorization.

111010221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61028283.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111010221221 its reverse (122122010111), we get a palindrome (233132231332).

The spelling of 111010221221 in words is "one hundred eleven billion, ten million, two hundred twenty-one thousand, two hundred twenty-one".