2121110111223 has 40 divisors (see below), whose sum is σ = 3217392042480. Its totient is φ = 1392305967360.

The previous prime is 2121110111201. The next prime is 2121110111243. The reversal of 2121110111223 is 3221110111212.

It is a happy number.

It is not a de Polignac number, because 2121110111223 - 2¹⁴ = 2121110094839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121110111196 and 2121110111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121110111243) 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, 11462293 + ... + 11645873.

It is an arithmetic number, because the mean of its divisors is an integer number (80434801062).

Almost surely, 2^{2121110111223} is an apocalyptic number.

2121110111223 is a deficient number, since it is larger than the sum of its proper divisors (1096281931257).

2121110111223 is a wasteful number, since it uses less digits than its factorization.

2121110111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185789 (or 185780 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 2121110111223 its reverse (3221110111212), we get a palindrome (5342220222435).

The spelling of 2121110111223 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred twenty-three".