5056621202221 has 16 divisors (see below), whose sum is σ = 5361999294960. Its totient is φ = 4752127959040.

The previous prime is 5056621202167. The next prime is 5056621202231. The reversal of 5056621202221 is 1222021266505.

It can be written as a sum of positive squares in 8 ways, for example, as 222207589321 + 4834413612900 = 471389^2 + 2198730^2 .

It is a cyclic number.

It is not a de Polignac number, because 5056621202221 - 2³¹ = 5054473718573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5056621202231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44409855 + ... + 44523571.

It is an arithmetic number, because the mean of its divisors is an integer number (335124955935).

Almost surely, 2^{5056621202221} is an apocalyptic number.

It is an amenable number.

5056621202221 is a deficient number, since it is larger than the sum of its proper divisors (305378092739).

5056621202221 is a wasteful number, since it uses less digits than its factorization.

5056621202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117584.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 5056621202221 its reverse (1222021266505), we get a palindrome (6278642468726).

The spelling of 5056621202221 in words is "five trillion, fifty-six billion, six hundred twenty-one million, two hundred two thousand, two hundred twenty-one".