21321310013333 has 8 divisors (see below), whose sum is σ = 23259673151136. Its totient is φ = 19382957246800.

The previous prime is 21321310013327. The next prime is 21321310013387. The reversal of 21321310013333 is 33331001312312.

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

It is a cyclic number.

It is not a de Polignac number, because 21321310013333 - 2²² = 21321305819029 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 (21321310013303) 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, 2070335 + ... + 6850467.

It is an arithmetic number, because the mean of its divisors is an integer number (2907459143892).

Almost surely, 2^{21321310013333} is an apocalyptic number.

It is an amenable number.

21321310013333 is a deficient number, since it is larger than the sum of its proper divisors (1938363137803).

21321310013333 is a wasteful number, since it uses less digits than its factorization.

21321310013333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185635.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21321310013333 its reverse (33331001312312), we get a palindrome (54652311325645).

The spelling of 21321310013333 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred ten million, thirteen thousand, three hundred thirty-three".