21020313331411 has 2 divisors, whose sum is σ = 21020313331412. Its totient is φ = 21020313331410.

The previous prime is 21020313331393. The next prime is 21020313331417. The reversal of 21020313331411 is 11413331302012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21020313331411 - 2¹¹ = 21020313329363 is a prime.

It is not a weakly prime, because it can be changed into another prime (21020313331417) 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, 10510156665705 + 10510156665706.

It is an arithmetic number, because the mean of its divisors is an integer number (10510156665706).

Almost surely, 2^{21020313331411} is an apocalyptic number.

21020313331411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020313331411 is an equidigital number, since it uses as much as digits as its factorization.

21020313331411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21020313331411 its reverse (11413331302012), we get a palindrome (32433644633423).

The spelling of 21020313331411 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, three hundred thirty-one thousand, four hundred eleven".