2321211021 has 16 divisors (see below), whose sum is σ = 3191821248. Its totient is φ = 1499385600.

The previous prime is 2321211017. The next prime is 2321211041. The reversal of 2321211021 is 1201121232.

It is not a de Polignac number, because 2321211021 - 2² = 2321211017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321211041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16635 + ... + 70136.

It is an arithmetic number, because the mean of its divisors is an integer number (199488828).

Almost surely, 2^2321211021 is an apocalyptic number.

It is an amenable number.

2321211021 is a deficient number, since it is larger than the sum of its proper divisors (870610227).

2321211021 is a wasteful number, since it uses less digits than its factorization.

2321211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87052.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2321211021 is about 48178.9479025850. The cubic root of 2321211021 is about 1324.0514908112.

Adding to 2321211021 its reverse (1201121232), we get a palindrome (3522332253).

The spelling of 2321211021 in words is "two billion, three hundred twenty-one million, two hundred eleven thousand, twenty-one".