21320003033101 has 4 divisors (see below), whose sum is σ = 21321620280832. Its totient is φ = 21318385785372.

The previous prime is 21320003033059. The next prime is 21320003033111. The reversal of 21320003033101 is 10133030002312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21320003033101 - 2⁹ = 21320003032589 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 (21320003033111) 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, 808604091 + ... + 808630456.

It is an arithmetic number, because the mean of its divisors is an integer number (5330405070208).

Almost surely, 2^{21320003033101} is an apocalyptic number.

It is an amenable number.

21320003033101 is a deficient number, since it is larger than the sum of its proper divisors (1617247731).

21320003033101 is a wasteful number, since it uses less digits than its factorization.

21320003033101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617247730.

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

Adding to 21320003033101 its reverse (10133030002312), we get a palindrome (31453033035413).

The spelling of 21320003033101 in words is "twenty-one trillion, three hundred twenty billion, three million, thirty-three thousand, one hundred one".