21323201101111 has 32 divisors (see below), whose sum is σ = 26521609605120. Its totient is φ = 16693501458816.

The previous prime is 21323201101099. The next prime is 21323201101157. The reversal of 21323201101111 is 11110110232312.

It is not a de Polignac number, because 21323201101111 - 2³⁷ = 21185762147639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323201101711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292230 + ... + 6536956.

It is an arithmetic number, because the mean of its divisors is an integer number (828800300160).

Almost surely, 2^{21323201101111} is an apocalyptic number.

21323201101111 is a deficient number, since it is larger than the sum of its proper divisors (5198408504009).

21323201101111 is a wasteful number, since it uses less digits than its factorization.

21323201101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6245143.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21323201101111 its reverse (11110110232312), we get a palindrome (32433311333423).

The spelling of 21323201101111 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred one million, one hundred one thousand, one hundred eleven".