1201210010251 has 2 divisors, whose sum is σ = 1201210010252. Its totient is φ = 1201210010250.

The previous prime is 1201210010249. The next prime is 1201210010261. The reversal of 1201210010251 is 1520100121021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201210010251 - 2¹ = 1201210010249 is a prime.

Together with 1201210010249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1201210010261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605005125 + 600605005126.

It is an arithmetic number, because the mean of its divisors is an integer number (600605005126).

Almost surely, 2^{1201210010251} is an apocalyptic number.

1201210010251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201210010251 is an equidigital number, since it uses as much as digits as its factorization.

1201210010251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1201210010251 its reverse (1520100121021), we get a palindrome (2721310131272).

The spelling of 1201210010251 in words is "one trillion, two hundred one billion, two hundred ten million, ten thousand, two hundred fifty-one".