221213013230201 has 2 divisors, whose sum is σ = 221213013230202. Its totient is φ = 221213013230200.

The previous prime is 221213013230129. The next prime is 221213013230203. The reversal of 221213013230201 is 102032310312122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170791311751225 + 50421701478976 = 13068715^2 + 7100824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221213013230201 is a prime.

Together with 221213013230203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221213013230203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606506615100 + 110606506615101.

It is an arithmetic number, because the mean of its divisors is an integer number (110606506615101).

Almost surely, 2^{221213013230201} is an apocalyptic number.

It is an amenable number.

221213013230201 is a deficient number, since it is larger than the sum of its proper divisors (1).

221213013230201 is an equidigital number, since it uses as much as digits as its factorization.

221213013230201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 221213013230201 its reverse (102032310312122), we get a palindrome (323245323542323).

The spelling of 221213013230201 in words is "two hundred twenty-one trillion, two hundred thirteen billion, thirteen million, two hundred thirty thousand, two hundred one".