5523212021 has 2 divisors, whose sum is σ = 5523212022. Its totient is φ = 5523212020.

The previous prime is 5523211997. The next prime is 5523212053. The reversal of 5523212021 is 1202123255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4527809521 + 995402500 = 67289^2 + 31550^2 .

It is a cyclic number.

It is not a de Polignac number, because 5523212021 - 2²⁶ = 5456103157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5523212621) 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, 2761606010 + 2761606011.

It is an arithmetic number, because the mean of its divisors is an integer number (2761606011).

Almost surely, 2^5523212021 is an apocalyptic number.

It is an amenable number.

5523212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5523212021 is an equidigital number, since it uses as much as digits as its factorization.

5523212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5523212021 is about 74318.3155150869. The cubic root of 5523212021 is about 1767.6539103224.

Adding to 5523212021 its reverse (1202123255), we get a palindrome (6725335276).

The spelling of 5523212021 in words is "five billion, five hundred twenty-three million, two hundred twelve thousand, twenty-one".