1201203251 has 2 divisors, whose sum is σ = 1201203252. Its totient is φ = 1201203250.

The previous prime is 1201203233. The next prime is 1201203253. The reversal of 1201203251 is 1523021021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201203251 is a prime.

Together with 1201203253, 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 (1201203253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600601625 + 600601626.

It is an arithmetic number, because the mean of its divisors is an integer number (600601626).

Almost surely, 2^1201203251 is an apocalyptic number.

1201203251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201203251 is an equidigital number, since it uses as much as digits as its factorization.

1201203251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1201203251 is about 34658.3792321568. The cubic root of 1201203251 is about 1063.0136296977.

Adding to 1201203251 its reverse (1523021021), we get a palindrome (2724224272).

The spelling of 1201203251 in words is "one billion, two hundred one million, two hundred three thousand, two hundred fifty-one".