21011330322311 has 12 divisors (see below), whose sum is σ = 24454279517760. Its totient is φ = 18000480607200.

The previous prime is 21011330322263. The next prime is 21011330322329. The reversal of 21011330322311 is 11322303311012.

It is not a de Polignac number, because 21011330322311 - 2¹⁰ = 21011330321287 is a prime.

It is a super-2 number, since 2×21011330322311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011330342311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109797446 + ... + 109988643.

It is an arithmetic number, because the mean of its divisors is an integer number (2037856626480).

Almost surely, 2^{21011330322311} is an apocalyptic number.

21011330322311 is a deficient number, since it is larger than the sum of its proper divisors (3442949195449).

21011330322311 is a wasteful number, since it uses less digits than its factorization.

21011330322311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219788054 (or 219788047 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21011330322311 its reverse (11322303311012), we get a palindrome (32333633633323).

The spelling of 21011330322311 in words is "twenty-one trillion, eleven billion, three hundred thirty million, three hundred twenty-two thousand, three hundred eleven".