21323302012111 has 32 divisors (see below), whose sum is σ = 24525575020800. Its totient is φ = 18334960416000.

The previous prime is 21323302012057. The next prime is 21323302012153. The reversal of 21323302012111 is 11121020332312.

It is a cyclic number.

It is not a de Polignac number, because 21323302012111 - 2¹⁹ = 21323301487823 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 (21323302012171) 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, 1611853845 + ... + 1611867073.

It is an arithmetic number, because the mean of its divisors is an integer number (766424219400).

Almost surely, 2^{21323302012111} is an apocalyptic number.

21323302012111 is a deficient number, since it is larger than the sum of its proper divisors (3202273008689).

21323302012111 is a wasteful number, since it uses less digits than its factorization.

21323302012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25111.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21323302012111 its reverse (11121020332312), we get a palindrome (32444322344423).

It can be divided in two parts, 2132330201 and 2111, that added together give a palindrome (2132332312).

The spelling of 21323302012111 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred two million, twelve thousand, one hundred eleven".