221232313200377 has 2 divisors, whose sum is σ = 221232313200378. Its totient is φ = 221232313200376.

The previous prime is 221232313200299. The next prime is 221232313200383. The reversal of 221232313200377 is 773002313232122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219782285403136 + 1450027797241 = 14825056^2 + 1204171^2 .

It is a cyclic number.

It is not a de Polignac number, because 221232313200377 - 2³² = 221228018233081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221232313200377.

It is not a weakly prime, because it can be changed into another prime (221232313200077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616156600188 + 110616156600189.

It is an arithmetic number, because the mean of its divisors is an integer number (110616156600189).

Almost surely, 2^{221232313200377} is an apocalyptic number.

It is an amenable number.

221232313200377 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232313200377 is an equidigital number, since it uses as much as digits as its factorization.

221232313200377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 38.

Adding to 221232313200377 its reverse (773002313232122), we get a palindrome (994234626432499).

The spelling of 221232313200377 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, three hundred thirteen million, two hundred thousand, three hundred seventy-seven".