5091221041 has 2 divisors, whose sum is σ = 5091221042. Its totient is φ = 5091221040.

The previous prime is 5091221039. The next prime is 5091221071. The reversal of 5091221041 is 1401221905.

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., 4908403600 + 182817441 = 70060^2 + 13521^2 .

It is a cyclic number.

It is not a de Polignac number, because 5091221041 - 2¹ = 5091221039 is a prime.

It is a super-2 number, since 2×5091221041² = 51841063376642247362, which contains 22 as substring.

Together with 5091221039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5091220997 and 5091221015.

It is not a weakly prime, because it can be changed into another prime (5091221071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2545610520 + 2545610521.

It is an arithmetic number, because the mean of its divisors is an integer number (2545610521).

Almost surely, 2^5091221041 is an apocalyptic number.

It is an amenable number.

5091221041 is a deficient number, since it is larger than the sum of its proper divisors (1).

5091221041 is an equidigital number, since it uses as much as digits as its factorization.

5091221041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 5091221041 is about 71352.7928044866. The cubic root of 5091221041 is about 1720.3123915419.

Adding to 5091221041 its reverse (1401221905), we get a palindrome (6492442946).

The spelling of 5091221041 in words is "five billion, ninety-one million, two hundred twenty-one thousand, forty-one".