5113220221 has 2 divisors, whose sum is σ = 5113220222. Its totient is φ = 5113220220.

The previous prime is 5113220219. The next prime is 5113220251. The reversal of 5113220221 is 1220223115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4423580100 + 689640121 = 66510^2 + 26261^2 .

It is a cyclic number.

It is not a de Polignac number, because 5113220221 - 2¹ = 5113220219 is a prime.

It is a super-2 number, since 2×5113220221² = 52290042056886577682, which contains 22 as substring.

Together with 5113220219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5113220251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2556610110 + 2556610111.

It is an arithmetic number, because the mean of its divisors is an integer number (2556610111).

Almost surely, 2^5113220221 is an apocalyptic number.

It is an amenable number.

5113220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5113220221 is an equidigital number, since it uses as much as digits as its factorization.

5113220221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 5113220221 is about 71506.7844403592. The cubic root of 5113220221 is about 1722.7866560335.

Adding to 5113220221 its reverse (1220223115), we get a palindrome (6333443336).

The spelling of 5113220221 in words is "five billion, one hundred thirteen million, two hundred twenty thousand, two hundred twenty-one".