5221012081 has 2 divisors, whose sum is σ = 5221012082. Its totient is φ = 5221012080.

The previous prime is 5221012057. The next prime is 5221012117. The reversal of 5221012081 is 1802101225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5218762081 + 2250000 = 72241^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221012081 - 2²⁷ = 5086794353 is a prime.

It is a super-2 number, since 2×5221012081² = 54517934299895901122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5221012481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610506040 + 2610506041.

It is an arithmetic number, because the mean of its divisors is an integer number (2610506041).

Almost surely, 2^5221012081 is an apocalyptic number.

It is an amenable number.

5221012081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221012081 is an equidigital number, since it uses as much as digits as its factorization.

5221012081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 5221012081 is about 72256.5711959819. The cubic root of 5221012081 is about 1734.8085985072.

The spelling of 5221012081 in words is "five billion, two hundred twenty-one million, twelve thousand, eighty-one".