21323001103 has 16 divisors (see below), whose sum is σ = 21586314816. Its totient is φ = 21061877760.

The previous prime is 21323001083. The next prime is 21323001107. The reversal of 21323001103 is 30110032312.

It is a cyclic number.

It is not a de Polignac number, because 21323001103 - 2¹⁷ = 21322870031 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 (21323001107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28698150 + ... + 28698892.

It is an arithmetic number, because the mean of its divisors is an integer number (1349144676).

Almost surely, 2^21323001103 is an apocalyptic number.

21323001103 is a deficient number, since it is larger than the sum of its proper divisors (263313713).

21323001103 is a wasteful number, since it uses less digits than its factorization.

21323001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21323001103 its reverse (30110032312), we get a palindrome (51433033415).

The spelling of 21323001103 in words is "twenty-one billion, three hundred twenty-three million, one thousand, one hundred three".