2142232221 has 16 divisors (see below), whose sum is σ = 2905314048. Its totient is φ = 1403688000.

The previous prime is 2142232219. The next prime is 2142232229. The reversal of 2142232221 is 1222322412.

It is not a de Polignac number, because 2142232221 - 2¹ = 2142232219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142232229) 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, 295996 + ... + 303146.

It is an arithmetic number, because the mean of its divisors is an integer number (181582128).

Almost surely, 2^2142232221 is an apocalyptic number.

It is an amenable number.

2142232221 is a deficient number, since it is larger than the sum of its proper divisors (763081827).

2142232221 is a wasteful number, since it uses less digits than its factorization.

2142232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852.

The product of its digits is 768, while the sum is 21.

The square root of 2142232221 is about 46284.2545689136. The cubic root of 2142232221 is about 1289.1066508767.

Adding to 2142232221 its reverse (1222322412), we get a palindrome (3364554633).

The spelling of 2142232221 in words is "two billion, one hundred forty-two million, two hundred thirty-two thousand, two hundred twenty-one".