2220302621 has 2 divisors, whose sum is σ = 2220302622. Its totient is φ = 2220302620.

The previous prime is 2220302569. The next prime is 2220302647. The reversal of 2220302621 is 1262030222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019513721 + 200788900 = 44939^2 + 14170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220302621 - 2²² = 2216108317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220302593 and 2220302602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220302681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110151310 + 1110151311.

It is an arithmetic number, because the mean of its divisors is an integer number (1110151311).

Almost surely, 2^2220302621 is an apocalyptic number.

It is an amenable number.

2220302621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220302621 is an equidigital number, since it uses as much as digits as its factorization.

2220302621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2220302621 is about 47120.0872346391. The cubic root of 2220302621 is about 1304.5800229089.

Adding to 2220302621 its reverse (1262030222), we get a palindrome (3482332843).

The spelling of 2220302621 in words is "two billion, two hundred twenty million, three hundred two thousand, six hundred twenty-one".