2320421021 has 8 divisors (see below), whose sum is σ = 2395835904. Its totient is φ = 2245041360.

The previous prime is 2320421011. The next prime is 2320421027. The reversal of 2320421021 is 1201240232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2320421021 - 2¹⁸ = 2320158877 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 (2320421027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219176 + ... + 229518.

It is an arithmetic number, because the mean of its divisors is an integer number (299479488).

Almost surely, 2^2320421021 is an apocalyptic number.

It is an amenable number.

2320421021 is a deficient number, since it is larger than the sum of its proper divisors (75414883).

2320421021 is a wasteful number, since it uses less digits than its factorization.

2320421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17611.

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

The square root of 2320421021 is about 48170.7486032758. The cubic root of 2320421021 is about 1323.9012647215.

Adding to 2320421021 its reverse (1201240232), we get a palindrome (3521661253).

The spelling of 2320421021 in words is "two billion, three hundred twenty million, four hundred twenty-one thousand, twenty-one".