5221166213 has 4 divisors (see below), whose sum is σ = 5222213580. Its totient is φ = 5220118848.

The previous prime is 5221166189. The next prime is 5221166231. The reversal of 5221166213 is 3126611225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3916006084 + 1305160129 = 62578^2 + 36127^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221166213 - 2³⁰ = 4147424389 is a prime.

It is a super-2 number, since 2×5221166213² = 54521153247545522738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221166113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516170 + ... + 526187.

It is an arithmetic number, because the mean of its divisors is an integer number (1305553395).

Almost surely, 2^5221166213 is an apocalyptic number.

It is an amenable number.

5221166213 is a deficient number, since it is larger than the sum of its proper divisors (1047367).

5221166213 is a wasteful number, since it uses less digits than its factorization.

5221166213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047366.

The product of its digits is 4320, while the sum is 29.

The square root of 5221166213 is about 72257.6377485453. The cubic root of 5221166213 is about 1734.8256697113.

Adding to 5221166213 its reverse (3126611225), we get a palindrome (8347777438).

The spelling of 5221166213 in words is "five billion, two hundred twenty-one million, one hundred sixty-six thousand, two hundred thirteen".