21000220011323 has 8 divisors (see below), whose sum is σ = 24004193065440. Its totient is φ = 17997232363200.

The previous prime is 21000220011319. The next prime is 21000220011443. The reversal of 21000220011323 is 32311002200012.

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 21000220011323 - 2² = 21000220011319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000220211323) 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, 246305828 + ... + 246391073.

It is an arithmetic number, because the mean of its divisors is an integer number (3000524133180).

Almost surely, 2^{21000220011323} is an apocalyptic number.

21000220011323 is a deficient number, since it is larger than the sum of its proper divisors (3003973054117).

21000220011323 is an equidigital number, since it uses as much as digits as its factorization.

21000220011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492702997.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21000220011323 its reverse (32311002200012), we get a palindrome (53311222211335).

The spelling of 21000220011323 in words is "twenty-one trillion, two hundred twenty million, eleven thousand, three hundred twenty-three".