1021341246881 has 2 divisors, whose sum is σ = 1021341246882. Its totient is φ = 1021341246880.

The previous prime is 1021341246859. The next prime is 1021341246899. The reversal of 1021341246881 is 1886421431201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822104890000 + 199236356881 = 906700^2 + 446359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021341246881 is a prime.

It is a super-2 number, since 2×1021341246881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021341246851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510670623440 + 510670623441.

It is an arithmetic number, because the mean of its divisors is an integer number (510670623441).

Almost surely, 2^{1021341246881} is an apocalyptic number.

It is an amenable number.

1021341246881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021341246881 is an equidigital number, since it uses as much as digits as its factorization.

1021341246881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 1021341246881 in words is "one trillion, twenty-one billion, three hundred forty-one million, two hundred forty-six thousand, eight hundred eighty-one".