21302120331011 has 8 divisors (see below), whose sum is σ = 22940833678224. Its totient is φ = 19663419656160.

The previous prime is 21302120330999. The next prime is 21302120331017. The reversal of 21302120331011 is 11013302120312.

It is a happy number.

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 21302120331011 - 2⁴² = 16904073819907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302120331017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478685 + ... + 6544721.

It is an arithmetic number, because the mean of its divisors is an integer number (2867604209778).

Almost surely, 2^{21302120331011} is an apocalyptic number.

21302120331011 is a deficient number, since it is larger than the sum of its proper divisors (1638713347213).

21302120331011 is a wasteful number, since it uses less digits than its factorization.

21302120331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336181.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21302120331011 its reverse (11013302120312), we get a palindrome (32315422451323).

The spelling of 21302120331011 in words is "twenty-one trillion, three hundred two billion, one hundred twenty million, three hundred thirty-one thousand, eleven".