1301312111251 has 2 divisors, whose sum is σ = 1301312111252. Its totient is φ = 1301312111250.

The previous prime is 1301312111243. The next prime is 1301312111287. The reversal of 1301312111251 is 1521112131031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1301312111251 - 2³ = 1301312111243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301312111221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650656055625 + 650656055626.

It is an arithmetic number, because the mean of its divisors is an integer number (650656055626).

Almost surely, 2^{1301312111251} is an apocalyptic number.

1301312111251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301312111251 is an equidigital number, since it uses as much as digits as its factorization.

1301312111251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 1301312111251 its reverse (1521112131031), we get a palindrome (2822424242282).

The spelling of 1301312111251 in words is "one trillion, three hundred one billion, three hundred twelve million, one hundred eleven thousand, two hundred fifty-one".