21001303212323 has 8 divisors (see below), whose sum is σ = 25264725669120. Its totient is φ = 17053689826440.

The previous prime is 21001303212319. The next prime is 21001303212377. The reversal of 21001303212323 is 32321230310012.

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 21001303212323 - 2² = 21001303212319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001303212313) 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, 78952267583 + ... + 78952267848.

It is an arithmetic number, because the mean of its divisors is an integer number (3158090708640).

Almost surely, 2^{21001303212323} is an apocalyptic number.

21001303212323 is a deficient number, since it is larger than the sum of its proper divisors (4263422456797).

21001303212323 is a wasteful number, since it uses less digits than its factorization.

21001303212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157904535457.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21001303212323 its reverse (32321230310012), we get a palindrome (53322533522335).

The spelling of 21001303212323 in words is "twenty-one trillion, one billion, three hundred three million, two hundred twelve thousand, three hundred twenty-three".