21302033311 has 16 divisors (see below), whose sum is σ = 24295953024. Its totient is φ = 18502285824.

The previous prime is 21302033309. The next prime is 21302033351. The reversal of 21302033311 is 11333020312.

It is a cyclic number.

It is not a de Polignac number, because 21302033311 - 2¹ = 21302033309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302033351) 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 in 15 ways as a sum of consecutive naturals, for example, 1187370 + ... + 1205176.

It is an arithmetic number, because the mean of its divisors is an integer number (1518497064).

Almost surely, 2^21302033311 is an apocalyptic number.

21302033311 is a deficient number, since it is larger than the sum of its proper divisors (2993919713).

21302033311 is a wasteful number, since it uses less digits than its factorization.

21302033311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23250.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21302033311 its reverse (11333020312), we get a palindrome (32635053623).

The spelling of 21302033311 in words is "twenty-one billion, three hundred two million, thirty-three thousand, three hundred eleven".