1201013251 has 2 divisors, whose sum is σ = 1201013252. Its totient is φ = 1201013250.

The previous prime is 1201013249. The next prime is 1201013273. The reversal of 1201013251 is 1523101021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201013251 - 2¹ = 1201013249 is a prime.

Together with 1201013249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1201013851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600506625 + 600506626.

It is an arithmetic number, because the mean of its divisors is an integer number (600506626).

Almost surely, 2^1201013251 is an apocalyptic number.

1201013251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201013251 is an equidigital number, since it uses as much as digits as its factorization.

1201013251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1201013251 is about 34655.6380838674. The cubic root of 1201013251 is about 1062.9575794444.

Adding to 1201013251 its reverse (1523101021), we get a palindrome (2724114272).

The spelling of 1201013251 in words is "one billion, two hundred one million, thirteen thousand, two hundred fifty-one".