6221522641 has 2 divisors, whose sum is σ = 6221522642. Its totient is φ = 6221522640.

The previous prime is 6221522617. The next prime is 6221522677. The reversal of 6221522641 is 1462251226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6193060416 + 28462225 = 78696^2 + 5335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6221522641 - 2⁷ = 6221522513 is a prime.

It is a super-2 number, since 2×6221522641² = 77414687944951229762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6221522611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110761320 + 3110761321.

It is an arithmetic number, because the mean of its divisors is an integer number (3110761321).

Almost surely, 2^6221522641 is an apocalyptic number.

It is an amenable number.

6221522641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221522641 is an equidigital number, since it uses as much as digits as its factorization.

6221522641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 6221522641 is about 78876.6292446628. The cubic root of 6221522641 is about 1839.2138498295.

Adding to 6221522641 its reverse (1462251226), we get a palindrome (7683773867).

The spelling of 6221522641 in words is "six billion, two hundred twenty-one million, five hundred twenty-two thousand, six hundred forty-one".