21320020203301 has 4 divisors (see below), whose sum is σ = 21439126461600. Its totient is φ = 21200913945004.

The previous prime is 21320020203277. The next prime is 21320020203341. The reversal of 21320020203301 is 10330202002312.

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 a de Polignac number, because none of the positive numbers 2^k-21320020203301 is a prime.

It is a super-2 number, since 2×21320020203301² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320020203341) 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, 59553128881 + ... + 59553129238.

It is an arithmetic number, because the mean of its divisors is an integer number (5359781615400).

Almost surely, 2^{21320020203301} is an apocalyptic number.

It is an amenable number.

21320020203301 is a deficient number, since it is larger than the sum of its proper divisors (119106258299).

21320020203301 is a wasteful number, since it uses less digits than its factorization.

21320020203301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119106258298.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21320020203301 its reverse (10330202002312), we get a palindrome (31650222205613).

The spelling of 21320020203301 in words is "twenty-one trillion, three hundred twenty billion, twenty million, two hundred three thousand, three hundred one".