1321042201 has 2 divisors, whose sum is σ = 1321042202. Its totient is φ = 1321042200.

The previous prime is 1321042057. The next prime is 1321042213. The reversal of 1321042201 is 1022401231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981192976 + 339849225 = 31324^2 + 18435^2 .

It is an emirp because it is prime and its reverse (1022401231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321042201 - 2¹⁵ = 1321009433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321042271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660521100 + 660521101.

It is an arithmetic number, because the mean of its divisors is an integer number (660521101).

Almost surely, 2^1321042201 is an apocalyptic number.

It is an amenable number.

1321042201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321042201 is an equidigital number, since it uses as much as digits as its factorization.

1321042201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1321042201 is about 36346.1442384196. The cubic root of 1321042201 is about 1097.2499350882.

Adding to 1321042201 its reverse (1022401231), we get a palindrome (2343443432).

The spelling of 1321042201 in words is "one billion, three hundred twenty-one million, forty-two thousand, two hundred one".