1351024648021 has 2 divisors, whose sum is σ = 1351024648022. Its totient is φ = 1351024648020.

The previous prime is 1351024647979. The next prime is 1351024648067. The reversal of 1351024648021 is 1208464201531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979132019121 + 371892628900 = 989511^2 + 609830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351024648021 - 2⁷ = 1351024647893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351024648121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675512324010 + 675512324011.

It is an arithmetic number, because the mean of its divisors is an integer number (675512324011).

Almost surely, 2^{1351024648021} is an apocalyptic number.

It is an amenable number.

1351024648021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351024648021 is an equidigital number, since it uses as much as digits as its factorization.

1351024648021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

Adding to 1351024648021 its reverse (1208464201531), we get a palindrome (2559488849552).

The spelling of 1351024648021 in words is "one trillion, three hundred fifty-one billion, twenty-four million, six hundred forty-eight thousand, twenty-one".