21010300332311 has 4 divisors (see below), whose sum is σ = 21406721093352. Its totient is φ = 20613879571272.

The previous prime is 21010300332227. The next prime is 21010300332349. The reversal of 21010300332311 is 11323300301012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010300332311 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 (21010300332011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198210380441 + ... + 198210380546.

It is an arithmetic number, because the mean of its divisors is an integer number (5351680273338).

Almost surely, 2^{21010300332311} is an apocalyptic number.

21010300332311 is a deficient number, since it is larger than the sum of its proper divisors (396420761041).

21010300332311 is an equidigital number, since it uses as much as digits as its factorization.

21010300332311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396420761040.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21010300332311 its reverse (11323300301012), we get a palindrome (32333600633323).

The spelling of 21010300332311 in words is "twenty-one trillion, ten billion, three hundred million, three hundred thirty-two thousand, three hundred eleven".