21021300313333 has 8 divisors (see below), whose sum is σ = 21255455562080. Its totient is φ = 20788414199280.

The previous prime is 21021300313249. The next prime is 21021300313337. The reversal of 21021300313333 is 33331300312012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21021300313333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21021300313298 and 21021300313307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021300313337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317250363 + ... + 317316616.

It is an arithmetic number, because the mean of its divisors is an integer number (2656931945260).

Almost surely, 2^{21021300313333} is an apocalyptic number.

It is an amenable number.

21021300313333 is a deficient number, since it is larger than the sum of its proper divisors (234155248747).

21021300313333 is a wasteful number, since it uses less digits than its factorization.

21021300313333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634567347.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 21021300313333 its reverse (33331300312012), we get a palindrome (54352600625345).

The spelling of 21021300313333 in words is "twenty-one trillion, twenty-one billion, three hundred million, three hundred thirteen thousand, three hundred thirty-three".