10221220291 has 2 divisors, whose sum is σ = 10221220292. Its totient is φ = 10221220290.

The previous prime is 10221220213. The next prime is 10221220307. The reversal of 10221220291 is 19202212201.

10221220291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19202212201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10221220291 - 2¹⁵ = 10221187523 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221220591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110610145 + 5110610146.

It is an arithmetic number, because the mean of its divisors is an integer number (5110610146).

Almost surely, 2^10221220291 is an apocalyptic number.

10221220291 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221220291 is an equidigital number, since it uses as much as digits as its factorization.

10221220291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 10221220291 its reverse (19202212201), we get a palindrome (29423432492).

The spelling of 10221220291 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ninety-one".