2213330621 has 2 divisors, whose sum is σ = 2213330622. Its totient is φ = 2213330620.

The previous prime is 2213330617. The next prime is 2213330629. The reversal of 2213330621 is 1260333122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2213232025 + 98596 = 47045^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213330621 - 2² = 2213330617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2213330629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106665310 + 1106665311.

It is an arithmetic number, because the mean of its divisors is an integer number (1106665311).

Almost surely, 2^2213330621 is an apocalyptic number.

It is an amenable number.

2213330621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213330621 is an equidigital number, since it uses as much as digits as its factorization.

2213330621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 2213330621 is about 47046.0478786476. The cubic root of 2213330621 is about 1303.2130817830.

Adding to 2213330621 its reverse (1260333122), we get a palindrome (3473663743).

The spelling of 2213330621 in words is "two billion, two hundred thirteen million, three hundred thirty thousand, six hundred twenty-one".