21312330210111 has 8 divisors (see below), whose sum is σ = 28419049490944. Its totient is φ = 14206915534680.

The previous prime is 21312330209971. The next prime is 21312330210113. The reversal of 21312330210111 is 11101203321312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21312330210111 - 2²⁶ = 21312263101247 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 (21312330210113) 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, 326113231 + ... + 326178576.

It is an arithmetic number, because the mean of its divisors is an integer number (3552381186368).

Almost surely, 2^{21312330210111} is an apocalyptic number.

21312330210111 is a deficient number, since it is larger than the sum of its proper divisors (7106719280833).

21312330210111 is a wasteful number, since it uses less digits than its factorization.

21312330210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652302701.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21312330210111 its reverse (11101203321312), we get a palindrome (32413533531423).

The spelling of 21312330210111 in words is "twenty-one trillion, three hundred twelve billion, three hundred thirty million, two hundred ten thousand, one hundred eleven".