21303021010351 has 2 divisors, whose sum is σ = 21303021010352. Its totient is φ = 21303021010350.

The previous prime is 21303021010321. The next prime is 21303021010367. The reversal of 21303021010351 is 15301012030312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21303021010351 - 2⁴¹ = 19103997754799 is a prime.

It is a super-2 number, since 2×21303021010351² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303021010321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651510505175 + 10651510505176.

It is an arithmetic number, because the mean of its divisors is an integer number (10651510505176).

Almost surely, 2^{21303021010351} is an apocalyptic number.

21303021010351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303021010351 is an equidigital number, since it uses as much as digits as its factorization.

21303021010351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 21303021010351 its reverse (15301012030312), we get a palindrome (36604033040663).

The spelling of 21303021010351 in words is "twenty-one trillion, three hundred three billion, twenty-one million, ten thousand, three hundred fifty-one".