1201224257 has 2 divisors, whose sum is σ = 1201224258. Its totient is φ = 1201224256.

The previous prime is 1201224217. The next prime is 1201224259. The reversal of 1201224257 is 7524221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1033236736 + 167987521 = 32144^2 + 12961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201224257 - 2⁸ = 1201224001 is a prime.

Together with 1201224259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1201224259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600612128 + 600612129.

It is an arithmetic number, because the mean of its divisors is an integer number (600612129).

Almost surely, 2^1201224257 is an apocalyptic number.

It is an amenable number.

1201224257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201224257 is an equidigital number, since it uses as much as digits as its factorization.

1201224257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1201224257 is about 34658.6822744316. The cubic root of 1201224257 is about 1063.0198261328.

Adding to 1201224257 its reverse (7524221021), we get a palindrome (8725445278).

The spelling of 1201224257 in words is "one billion, two hundred one million, two hundred twenty-four thousand, two hundred fifty-seven".