1112210111221 has 12 divisors (see below), whose sum is σ = 1222634194432. Its totient is φ = 1010998989000.

The previous prime is 1112210111141. The next prime is 1112210111249. The reversal of 1112210111221 is 1221110122111.

It is not a de Polignac number, because 1112210111221 - 2¹⁵ = 1112210078453 is a prime.

It is a super-2 number, since 2×1112210111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112210111195 and 1112210111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112210111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 768886 + ... + 1677976.

Almost surely, 2^{1112210111221} is an apocalyptic number.

1112210111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112210111221 is a deficient number, since it is larger than the sum of its proper divisors (110424083211).

1112210111221 is a wasteful number, since it uses less digits than its factorization.

1112210111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919224 (or 919213 counting only the distinct ones).

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

Adding to 1112210111221 its reverse (1221110122111), we get a palindrome (2333320233332).

The spelling of 1112210111221 in words is "one trillion, one hundred twelve billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-one".