2210061521 has 2 divisors, whose sum is σ = 2210061522. Its totient is φ = 2210061520.

The previous prime is 2210061509. The next prime is 2210061527. The reversal of 2210061521 is 1251600122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2197734400 + 12327121 = 46880^2 + 3511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210061521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210061493 and 2210061502.

It is not a weakly prime, because it can be changed into another prime (2210061527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105030760 + 1105030761.

It is an arithmetic number, because the mean of its divisors is an integer number (1105030761).

Almost surely, 2^2210061521 is an apocalyptic number.

It is an amenable number.

2210061521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210061521 is an equidigital number, since it uses as much as digits as its factorization.

2210061521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2210061521 is about 47011.2914202535. The cubic root of 2210061521 is about 1302.5711482976.

Adding to 2210061521 its reverse (1251600122), we get a palindrome (3461661643).

The spelling of 2210061521 in words is "two billion, two hundred ten million, sixty-one thousand, five hundred twenty-one".