1201321241 has 2 divisors, whose sum is σ = 1201321242. Its totient is φ = 1201321240.

The previous prime is 1201321237. The next prime is 1201321249. The reversal of 1201321241 is 1421231021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057225225 + 144096016 = 32515^2 + 12004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201321241 - 2² = 1201321237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1201321249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600660620 + 600660621.

It is an arithmetic number, because the mean of its divisors is an integer number (600660621).

Almost surely, 2^1201321241 is an apocalyptic number.

It is an amenable number.

1201321241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201321241 is an equidigital number, since it uses as much as digits as its factorization.

1201321241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1201321241 is about 34660.0813761307. The cubic root of 1201321241 is about 1063.0484339302.

Adding to 1201321241 its reverse (1421231021), we get a palindrome (2622552262).

The spelling of 1201321241 in words is "one billion, two hundred one million, three hundred twenty-one thousand, two hundred forty-one".