21203323310323 has 32 divisors (see below), whose sum is σ = 26474416151040. Its totient is φ = 16497643196160.

The previous prime is 21203323310291. The next prime is 21203323310333. The reversal of 21203323310323 is 32301332330212.

It is not a de Polignac number, because 21203323310323 - 2⁵ = 21203323310291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21203323310291 and 21203323310300.

It is not an unprimeable number, because it can be changed into a prime (21203323310333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201812761 + ... + 201917797.

It is an arithmetic number, because the mean of its divisors is an integer number (827325504720).

Almost surely, 2^{21203323310323} is an apocalyptic number.

21203323310323 is a deficient number, since it is larger than the sum of its proper divisors (5271092840717).

21203323310323 is a wasteful number, since it uses less digits than its factorization.

21203323310323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108907.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21203323310323 its reverse (32301332330212), we get a palindrome (53504655640535).

The spelling of 21203323310323 in words is "twenty-one trillion, two hundred three billion, three hundred twenty-three million, three hundred ten thousand, three hundred twenty-three".