1210112220111 has 24 divisors (see below), whose sum is σ = 1651529313024. Its totient is φ = 787799738880.

The previous prime is 1210112220103. The next prime is 1210112220133. The reversal of 1210112220111 is 1110222110121.

It is a happy number.

It is not a de Polignac number, because 1210112220111 - 2³ = 1210112220103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210112220181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28404456 + ... + 28447026.

It is an arithmetic number, because the mean of its divisors is an integer number (68813721376).

Almost surely, 2^{1210112220111} is an apocalyptic number.

1210112220111 is a deficient number, since it is larger than the sum of its proper divisors (441417092913).

1210112220111 is an frugal number, since it uses more digits than its factorization.

1210112220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43519 (or 43070 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1210112220111 its reverse (1110222110121), we get a palindrome (2320334330232).

The spelling of 1210112220111 in words is "one trillion, two hundred ten billion, one hundred twelve million, two hundred twenty thousand, one hundred eleven".