221010202013 has 2 divisors, whose sum is σ = 221010202014. Its totient is φ = 221010202012.

The previous prime is 221010201953. The next prime is 221010202019. The reversal of 221010202013 is 310202010122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147005528569 + 74004673444 = 383413^2 + 272038^2 .

It is a cyclic number.

It is not a de Polignac number, because 221010202013 - 2²² = 221006007709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221010202019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505101006 + 110505101007.

It is an arithmetic number, because the mean of its divisors is an integer number (110505101007).

Almost surely, 2^221010202013 is an apocalyptic number.

It is an amenable number.

221010202013 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010202013 is an equidigital number, since it uses as much as digits as its factorization.

221010202013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221010202013 its reverse (310202010122), we get a palindrome (531212212135).

The spelling of 221010202013 in words is "two hundred twenty-one billion, ten million, two hundred two thousand, thirteen".