1210201361 has 2 divisors, whose sum is σ = 1210201362. Its totient is φ = 1210201360.

The previous prime is 1210201339. The next prime is 1210201477. The reversal of 1210201361 is 1631020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1171761361 + 38440000 = 34231^2 + 6200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210201361 - 2¹⁰ = 1210200337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210204361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605100680 + 605100681.

It is an arithmetic number, because the mean of its divisors is an integer number (605100681).

Almost surely, 2^1210201361 is an apocalyptic number.

It is an amenable number.

1210201361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210201361 is an equidigital number, since it uses as much as digits as its factorization.

1210201361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1210201361 is about 34787.9485023190. The cubic root of 1210201361 is about 1065.6613438825.

Adding to 1210201361 its reverse (1631020121), we get a palindrome (2841221482).

The spelling of 1210201361 in words is "one billion, two hundred ten million, two hundred one thousand, three hundred sixty-one".