1323122201 has 2 divisors, whose sum is σ = 1323122202. Its totient is φ = 1323122200.

The previous prime is 1323122197. The next prime is 1323122243. The reversal of 1323122201 is 1022213231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270993801 + 52128400 = 35651^2 + 7220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323122201 - 2² = 1323122197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1323122201.

It is not a weakly prime, because it can be changed into another prime (1323122261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661561100 + 661561101.

It is an arithmetic number, because the mean of its divisors is an integer number (661561101).

Almost surely, 2^1323122201 is an apocalyptic number.

It is an amenable number.

1323122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323122201 is an equidigital number, since it uses as much as digits as its factorization.

1323122201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1323122201 is about 36374.7467482593. The cubic root of 1323122201 is about 1097.8255117257.

Adding to 1323122201 its reverse (1022213231), we get a palindrome (2345335432).

The spelling of 1323122201 in words is "one billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred one".