2112021223 has 6 divisors (see below), whose sum is σ = 2286981744. Its totient is φ = 1949557896.

The previous prime is 2112021217. The next prime is 2112021229. The reversal of 2112021223 is 3221202112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2112021217) and next prime (2112021229).

It is a de Polignac number, because none of the positive numbers 2^k-2112021223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112021197 and 2112021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112021229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6248415 + ... + 6248752.

It is an arithmetic number, because the mean of its divisors is an integer number (381163624).

Almost surely, 2^2112021223 is an apocalyptic number.

2112021223 is a deficient number, since it is larger than the sum of its proper divisors (174960521).

2112021223 is a wasteful number, since it uses less digits than its factorization.

2112021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12497193 (or 12497180 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2112021223 is about 45956.7320748549. The cubic root of 2112021223 is about 1283.0180295534.

Adding to 2112021223 its reverse (3221202112), we get a palindrome (5333223335).

The spelling of 2112021223 in words is "two billion, one hundred twelve million, twenty-one thousand, two hundred twenty-three".