2213143526521 has 2 divisors, whose sum is σ = 2213143526522. Its totient is φ = 2213143526520.

The previous prime is 2213143526509. The next prime is 2213143526557. The reversal of 2213143526521 is 1256253413122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1495090662121 + 718052864400 = 1222739^2 + 847380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213143526521 - 2¹³ = 2213143518329 is a prime.

It is not a weakly prime, because it can be changed into another prime (2213143526821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106571763260 + 1106571763261.

It is an arithmetic number, because the mean of its divisors is an integer number (1106571763261).

Almost surely, 2^{2213143526521} is an apocalyptic number.

It is an amenable number.

2213143526521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213143526521 is an equidigital number, since it uses as much as digits as its factorization.

2213143526521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 37.

Adding to 2213143526521 its reverse (1256253413122), we get a palindrome (3469396939643).

The spelling of 2213143526521 in words is "two trillion, two hundred thirteen billion, one hundred forty-three million, five hundred twenty-six thousand, five hundred twenty-one".