2042310221 has 4 divisors (see below), whose sum is σ = 2334068832. Its totient is φ = 1750551612.

The previous prime is 2042310203. The next prime is 2042310271. The reversal of 2042310221 is 1220132402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1220132402 = 2 ⋅610066201.

It is a cyclic number.

It is not a de Polignac number, because 2042310221 - 2⁶ = 2042310157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2042310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042310271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145879295 + ... + 145879308.

It is an arithmetic number, because the mean of its divisors is an integer number (583517208).

Almost surely, 2^2042310221 is an apocalyptic number.

It is an amenable number.

2042310221 is a deficient number, since it is larger than the sum of its proper divisors (291758611).

2042310221 is an equidigital number, since it uses as much as digits as its factorization.

2042310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291758610.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2042310221 is about 45191.9265024185. The cubic root of 2042310221 is about 1268.7437141866.

Adding to 2042310221 its reverse (1220132402), we get a palindrome (3262442623).

The spelling of 2042310221 in words is "two billion, forty-two million, three hundred ten thousand, two hundred twenty-one".