21010502241031 has 2 divisors, whose sum is σ = 21010502241032. Its totient is φ = 21010502241030.

The previous prime is 21010502241023. The next prime is 21010502241049. The reversal of 21010502241031 is 13014220501012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21010502241031 - 2³ = 21010502241023 is a prime.

It is a super-2 number, since 2×21010502241031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010502240993 and 21010502241011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010502244031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505251120515 + 10505251120516.

It is an arithmetic number, because the mean of its divisors is an integer number (10505251120516).

Almost surely, 2^{21010502241031} is an apocalyptic number.

21010502241031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010502241031 is an equidigital number, since it uses as much as digits as its factorization.

21010502241031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21010502241031 its reverse (13014220501012), we get a palindrome (34024722742043).

The spelling of 21010502241031 in words is "twenty-one trillion, ten billion, five hundred two million, two hundred forty-one thousand, thirty-one".