21231303323111 has 8 divisors (see below), whose sum is σ = 24409642145280. Its totient is φ = 18089288373528.

The previous prime is 21231303323093. The next prime is 21231303323231. The reversal of 21231303323111 is 11132330313212.

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 21231303323111 - 2¹⁰ = 21231303322087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231303329111) 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, 9080966891 + ... + 9080969228.

It is an arithmetic number, because the mean of its divisors is an integer number (3051205268160).

Almost surely, 2^{21231303323111} is an apocalyptic number.

21231303323111 is a deficient number, since it is larger than the sum of its proper divisors (3178338822169).

21231303323111 is a wasteful number, since it uses less digits than its factorization.

21231303323111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18161936293.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21231303323111 its reverse (11132330313212), we get a palindrome (32363633636323).

The spelling of 21231303323111 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred three million, three hundred twenty-three thousand, one hundred eleven".