21330312222311 has 4 divisors (see below), whose sum is σ = 21330348709824. Its totient is φ = 21330275734800.

The previous prime is 21330312222277. The next prime is 21330312222377. The reversal of 21330312222311 is 11322221303312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21330312222311 - 2¹⁴ = 21330312205927 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 (21330312222391) 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, 17352350 + ... + 18540891.

It is an arithmetic number, because the mean of its divisors is an integer number (5332587177456).

Almost surely, 2^{21330312222311} is an apocalyptic number.

21330312222311 is a deficient number, since it is larger than the sum of its proper divisors (36487513).

21330312222311 is an equidigital number, since it uses as much as digits as its factorization.

21330312222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36487512.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21330312222311 its reverse (11322221303312), we get a palindrome (32652533525623).

The spelling of 21330312222311 in words is "twenty-one trillion, three hundred thirty billion, three hundred twelve million, two hundred twenty-two thousand, three hundred eleven".