2311002221 has 8 divisors (see below), whose sum is σ = 2521785504. Its totient is φ = 2100334320.

The previous prime is 2311002209. The next prime is 2311002223. The reversal of 2311002221 is 1222001132.

It is a happy number.

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 2311002221 - 2¹⁰ = 2311001197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311002196 and 2311002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311002223) 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 7 ways as a sum of consecutive naturals, for example, 16091 + ... + 69863.

It is an arithmetic number, because the mean of its divisors is an integer number (315223188).

Almost surely, 2^2311002221 is an apocalyptic number.

It is an amenable number.

2311002221 is a deficient number, since it is larger than the sum of its proper divisors (210783283).

2311002221 is a wasteful number, since it uses less digits than its factorization.

2311002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57691.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2311002221 is about 48072.8844672337. The cubic root of 2311002221 is about 1322.1075570332.

Adding to 2311002221 its reverse (1222001132), we get a palindrome (3533003353).

The spelling of 2311002221 in words is "two billion, three hundred eleven million, two thousand, two hundred twenty-one".