1301350021 has 2 divisors, whose sum is σ = 1301350022. Its totient is φ = 1301350020.

The previous prime is 1301350013. The next prime is 1301350067. The reversal of 1301350021 is 1200531031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1262736225 + 38613796 = 35535^2 + 6214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301350021 - 2³ = 1301350013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301349977 and 1301350004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301350121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650675010 + 650675011.

It is an arithmetic number, because the mean of its divisors is an integer number (650675011).

Almost surely, 2^1301350021 is an apocalyptic number.

It is an amenable number.

1301350021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301350021 is an equidigital number, since it uses as much as digits as its factorization.

1301350021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1301350021 is about 36074.2293195572. The cubic root of 1301350021 is about 1091.7705480799.

Adding to 1301350021 its reverse (1200531031), we get a palindrome (2501881052).

The spelling of 1301350021 in words is "one billion, three hundred one million, three hundred fifty thousand, twenty-one".