201201221057 has 2 divisors, whose sum is σ = 201201221058. Its totient is φ = 201201221056.

The previous prime is 201201220999. The next prime is 201201221059. The reversal of 201201221057 is 750122102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200989925761 + 211295296 = 448319^2 + 14536^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201221057 - 2²⁸ = 200932785601 is a prime.

Together with 201201221059, 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 (201201221059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600610528 + 100600610529.

It is an arithmetic number, because the mean of its divisors is an integer number (100600610529).

Almost surely, 2^201201221057 is an apocalyptic number.

It is an amenable number.

201201221057 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201221057 is an equidigital number, since it uses as much as digits as its factorization.

201201221057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 201201221057 its reverse (750122102102), we get a palindrome (951323323159).

The spelling of 201201221057 in words is "two hundred one billion, two hundred one million, two hundred twenty-one thousand, fifty-seven".