1112111110221 has 16 divisors (see below), whose sum is σ = 1526614401600. Its totient is φ = 719605600128.

The previous prime is 1112111110199. The next prime is 1112111110249. The reversal of 1112111110221 is 1220111112111.

It is not a de Polignac number, because 1112111110221 - 2¹⁷ = 1112110979149 is a prime.

It is a super-2 number, since 2×1112111110221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1112111110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112111110261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12202791 + ... + 12293588.

It is an arithmetic number, because the mean of its divisors is an integer number (95413400100).

Almost surely, 2^{1112111110221} is an apocalyptic number.

It is an amenable number.

1112111110221 is a deficient number, since it is larger than the sum of its proper divisors (414503291379).

1112111110221 is a wasteful number, since it uses less digits than its factorization.

1112111110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24496828.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1112111110221 its reverse (1220111112111), we get a palindrome (2332222222332).

The spelling of 1112111110221 in words is "one trillion, one hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-one".