2331002221 has 8 divisors (see below), whose sum is σ = 2352992000. Its totient is φ = 2309115600.

The previous prime is 2331002171. The next prime is 2331002249. The reversal of 2331002221 is 1222001332.

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 2331002221 - 2¹¹ = 2331000173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331002195 and 2331002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331002021) 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, 19996 + ... + 71146.

It is an arithmetic number, because the mean of its divisors is an integer number (294124000).

Almost surely, 2^2331002221 is an apocalyptic number.

It is an amenable number.

2331002221 is a deficient number, since it is larger than the sum of its proper divisors (21989779).

2331002221 is a wasteful number, since it uses less digits than its factorization.

2331002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51579.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2331002221 is about 48280.4538193253. The cubic root of 2331002221 is about 1325.9105588235.

Adding to 2331002221 its reverse (1222001332), we get a palindrome (3553003553).

The spelling of 2331002221 in words is "two billion, three hundred thirty-one million, two thousand, two hundred twenty-one".