1021506131363 has 2 divisors, whose sum is σ = 1021506131364. Its totient is φ = 1021506131362.

The previous prime is 1021506131287. The next prime is 1021506131369. The reversal of 1021506131363 is 3631316051201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021506131363 - 2³⁴ = 1004326262179 is a prime.

It is a super-2 number, since 2×1021506131363² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1021506131369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510753065681 + 510753065682.

It is an arithmetic number, because the mean of its divisors is an integer number (510753065682).

Almost surely, 2^{1021506131363} is an apocalyptic number.

1021506131363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021506131363 is an equidigital number, since it uses as much as digits as its factorization.

1021506131363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 1021506131363 in words is "one trillion, twenty-one billion, five hundred six million, one hundred thirty-one thousand, three hundred sixty-three".