2142181223 has 16 divisors (see below), whose sum is σ = 2645153280. Its totient is φ = 1689369696.

The previous prime is 2142181207. The next prime is 2142181229. The reversal of 2142181223 is 3221812412.

It is not a de Polignac number, because 2142181223 - 2⁴ = 2142181207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142181192 and 2142181201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142181229) 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, 10403 + ... + 66276.

It is an arithmetic number, because the mean of its divisors is an integer number (165322080).

Almost surely, 2^2142181223 is an apocalyptic number.

2142181223 is a deficient number, since it is larger than the sum of its proper divisors (502972057).

2142181223 is a wasteful number, since it uses less digits than its factorization.

2142181223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77006.

The product of its digits is 1536, while the sum is 26.

The square root of 2142181223 is about 46283.7036439393. The cubic root of 2142181223 is about 1289.0964213006.

Adding to 2142181223 its reverse (3221812412), we get a palindrome (5363993635).

The spelling of 2142181223 in words is "two billion, one hundred forty-two million, one hundred eighty-one thousand, two hundred twenty-three".