2320142221 has 4 divisors (see below), whose sum is σ = 2320866652. Its totient is φ = 2319417792.

The previous prime is 2320142219. The next prime is 2320142233. The reversal of 2320142221 is 1222410232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 805764996 + 1514377225 = 28386^2 + 38915^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320142221 - 2¹ = 2320142219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320142261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357390 + ... + 363823.

It is an arithmetic number, because the mean of its divisors is an integer number (580216663).

Almost surely, 2^2320142221 is an apocalyptic number.

It is an amenable number.

2320142221 is a deficient number, since it is larger than the sum of its proper divisors (724431).

2320142221 is an equidigital number, since it uses as much as digits as its factorization.

2320142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724430.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2320142221 is about 48167.8546439428. The cubic root of 2320142221 is about 1323.8482400832.

Adding to 2320142221 its reverse (1222410232), we get a palindrome (3542552453).

The spelling of 2320142221 in words is "two billion, three hundred twenty million, one hundred forty-two thousand, two hundred twenty-one".