201220223201 has 2 divisors, whose sum is σ = 201220223202. Its totient is φ = 201220223200.

The previous prime is 201220223167. The next prime is 201220223203. The reversal of 201220223201 is 102322022102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191450877601 + 9769345600 = 437551^2 + 98840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201220223201 is a prime.

Together with 201220223203, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201220223201.

It is not a weakly prime, because it can be changed into another prime (201220223203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610111600 + 100610111601.

It is an arithmetic number, because the mean of its divisors is an integer number (100610111601).

Almost surely, 2^201220223201 is an apocalyptic number.

It is an amenable number.

201220223201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220223201 is an equidigital number, since it uses as much as digits as its factorization.

201220223201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201220223201 its reverse (102322022102), we get a palindrome (303542245303).

The spelling of 201220223201 in words is "two hundred one billion, two hundred twenty million, two hundred twenty-three thousand, two hundred one".