111222310221 has 40 divisors (see below), whose sum is σ = 184222592928. Its totient is φ = 66302388000.

The previous prime is 111222310211. The next prime is 111222310247. The reversal of 111222310221 is 122013222111.

111222310221 is a `hidden beast` number, since 1 + 112 + 22 + 310 + 221 = 666.

It is not a de Polignac number, because 111222310221 - 2⁵ = 111222310189 is a prime.

It is a super-2 number, since 2×111222310221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111222310194 and 111222310203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222310211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 968835 + ... + 1077536.

Almost surely, 2^111222310221 is an apocalyptic number.

111222310221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111222310221 is a deficient number, since it is larger than the sum of its proper divisors (73000282707).

111222310221 is a wasteful number, since it uses less digits than its factorization.

111222310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046455 (or 2046446 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111222310221 its reverse (122013222111), we get a palindrome (233235532332).

The spelling of 111222310221 in words is "one hundred eleven billion, two hundred twenty-two million, three hundred ten thousand, two hundred twenty-one".