21023132231321 has 8 divisors (see below), whose sum is σ = 22939513711488. Its totient is φ = 19107615358000.

The previous prime is 21023132231293. The next prime is 21023132231341. The reversal of 21023132231321 is 12313223132012.

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 21023132231321 - 2¹⁴ = 21023132214937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21023132231341) 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, 216100865 + ... + 216198126.

It is an arithmetic number, because the mean of its divisors is an integer number (2867439213936).

Almost surely, 2^{21023132231321} is an apocalyptic number.

It is an amenable number.

21023132231321 is a deficient number, since it is larger than the sum of its proper divisors (1916381480167).

21023132231321 is a wasteful number, since it uses less digits than its factorization.

21023132231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432303423.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21023132231321 its reverse (12313223132012), we get a palindrome (33336355363333).

The spelling of 21023132231321 in words is "twenty-one trillion, twenty-three billion, one hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty-one".