21003312022323 has 4 divisors (see below), whose sum is σ = 28004416029768. Its totient is φ = 14002208014880.

The previous prime is 21003312022309. The next prime is 21003312022369. The reversal of 21003312022323 is 32322021330012.

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 21003312022323 - 2⁴ = 21003312022307 is a prime.

It is a super-2 number, since 2×21003312022323² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003312022293 and 21003312022302.

It is not an unprimeable number, because it can be changed into a prime (21003312022393) 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, 3500552003718 + ... + 3500552003723.

It is an arithmetic number, because the mean of its divisors is an integer number (7001104007442).

Almost surely, 2^{21003312022323} is an apocalyptic number.

21003312022323 is a deficient number, since it is larger than the sum of its proper divisors (7001104007445).

21003312022323 is an equidigital number, since it uses as much as digits as its factorization.

21003312022323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001104007444.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21003312022323 its reverse (32322021330012), we get a palindrome (53325333352335).

The spelling of 21003312022323 in words is "twenty-one trillion, three billion, three hundred twelve million, twenty-two thousand, three hundred twenty-three".