2321022221 has 8 divisors (see below), whose sum is σ = 2744065920. Its totient is φ = 1920845808.

The previous prime is 2321022211. The next prime is 2321022233. The reversal of 2321022221 is 1222201232.

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

It is not a de Polignac number, because 2321022221 - 2¹⁴ = 2321005837 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 2321022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321022211) 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, 5716601 + ... + 5717006.

It is an arithmetic number, because the mean of its divisors is an integer number (343008240).

Almost surely, 2^2321022221 is an apocalyptic number.

It is an amenable number.

2321022221 is a deficient number, since it is larger than the sum of its proper divisors (423043699).

2321022221 is a wasteful number, since it uses less digits than its factorization.

2321022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433643.

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

The square root of 2321022221 is about 48176.9885007355. The cubic root of 2321022221 is about 1324.0155917773.

Adding to 2321022221 its reverse (1222201232), we get a palindrome (3543223453).

The spelling of 2321022221 in words is "two billion, three hundred twenty-one million, twenty-two thousand, two hundred twenty-one".