21301101323 has 4 divisors (see below), whose sum is σ = 21325390800. Its totient is φ = 21276811848.

The previous prime is 21301101259. The next prime is 21301101329. The reversal of 21301101323 is 32310110312.

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 21301101323 - 2⁶ = 21301101259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301101329) 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, 12143423 + ... + 12145176.

It is an arithmetic number, because the mean of its divisors is an integer number (5331347700).

Almost surely, 2^21301101323 is an apocalyptic number.

21301101323 is a deficient number, since it is larger than the sum of its proper divisors (24289477).

21301101323 is an equidigital number, since it uses as much as digits as its factorization.

21301101323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24289476.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21301101323 its reverse (32310110312), we get a palindrome (53611211635).

The spelling of 21301101323 in words is "twenty-one billion, three hundred one million, one hundred one thousand, three hundred twenty-three".