5085921221 has 2 divisors, whose sum is σ = 5085921222. Its totient is φ = 5085921220.

The previous prime is 5085921149. The next prime is 5085921257. The reversal of 5085921221 is 1221295805.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3028300900 + 2057620321 = 55030^2 + 45361^2 .

It is a cyclic number.

It is not a de Polignac number, because 5085921221 - 2¹⁰ = 5085920197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5085921521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542960610 + 2542960611.

It is an arithmetic number, because the mean of its divisors is an integer number (2542960611).

Almost surely, 2^5085921221 is an apocalyptic number.

It is an amenable number.

5085921221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5085921221 is an equidigital number, since it uses as much as digits as its factorization.

5085921221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 5085921221 is about 71315.6449946293. The cubic root of 5085921221 is about 1719.7152517850.

The spelling of 5085921221 in words is "five billion, eighty-five million, nine hundred twenty-one thousand, two hundred twenty-one".