21020301122311 has 2 divisors, whose sum is σ = 21020301122312. Its totient is φ = 21020301122310.

The previous prime is 21020301122309. The next prime is 21020301122329. The reversal of 21020301122311 is 11322110302012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21020301122311 - 2¹ = 21020301122309 is a prime.

Together with 21020301122309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21020301122011) 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, 10510150561155 + 10510150561156.

It is an arithmetic number, because the mean of its divisors is an integer number (10510150561156).

Almost surely, 2^{21020301122311} is an apocalyptic number.

21020301122311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020301122311 is an equidigital number, since it uses as much as digits as its factorization.

21020301122311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21020301122311 its reverse (11322110302012), we get a palindrome (32342411424323).

The spelling of 21020301122311 in words is "twenty-one trillion, twenty billion, three hundred one million, one hundred twenty-two thousand, three hundred eleven".