21030033001311 has 12 divisors (see below), whose sum is σ = 32163579884592. Its totient is φ = 13195314824256.

The previous prime is 21030033001297. The next prime is 21030033001319. The reversal of 21030033001311 is 11310033003012.

It is a happy number.

21030033001311 is a `hidden beast` number, since 2 + 1 + 0 + 300 + 330 + 0 + 1 + 31 + 1 = 666.

It is not a de Polignac number, because 21030033001311 - 2⁹ = 21030033000799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030033001319) 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, 68725597891 + ... + 68725598196.

It is an arithmetic number, because the mean of its divisors is an integer number (2680298323716).

Almost surely, 2^{21030033001311} is an apocalyptic number.

21030033001311 is a deficient number, since it is larger than the sum of its proper divisors (11133546883281).

21030033001311 is a wasteful number, since it uses less digits than its factorization.

21030033001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137451196110 (or 137451196107 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21030033001311 its reverse (11310033003012), we get a palindrome (32340066004323).

The spelling of 21030033001311 in words is "twenty-one trillion, thirty billion, thirty-three million, one thousand, three hundred eleven".