2221213321 has 8 divisors (see below), whose sum is σ = 2244612384. Its totient is φ = 2197863360.

The previous prime is 2221213303. The next prime is 2221213343. The reversal of 2221213321 is 1233121222.

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 2221213321 - 2¹¹ = 2221211273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221213301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82486 + ... + 106048.

It is an arithmetic number, because the mean of its divisors is an integer number (280576548).

Almost surely, 2^2221213321 is an apocalyptic number.

It is an amenable number.

2221213321 is a deficient number, since it is larger than the sum of its proper divisors (23399063).

2221213321 is a wasteful number, since it uses less digits than its factorization.

2221213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551.

The product of its digits is 288, while the sum is 19.

The square root of 2221213321 is about 47129.7498508108. The cubic root of 2221213321 is about 1304.7583647581.

Adding to 2221213321 its reverse (1233121222), we get a palindrome (3454334543).

The spelling of 2221213321 in words is "two billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred twenty-one".