1201001257 has 2 divisors, whose sum is σ = 1201001258. Its totient is φ = 1201001256.

The previous prime is 1201001251. The next prime is 1201001303. The reversal of 1201001257 is 7521001021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919969561 + 281031696 = 30331^2 + 16764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201001257 - 2⁷ = 1201001129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201001251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600500628 + 600500629.

It is an arithmetic number, because the mean of its divisors is an integer number (600500629).

Almost surely, 2^1201001257 is an apocalyptic number.

It is an amenable number.

1201001257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201001257 is an equidigital number, since it uses as much as digits as its factorization.

1201001257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1201001257 is about 34655.4650379994. The cubic root of 1201001257 is about 1062.9540410000.

Adding to 1201001257 its reverse (7521001021), we get a palindrome (8722002278).

The spelling of 1201001257 in words is "one billion, two hundred one million, one thousand, two hundred fifty-seven".