21323113023211 has 16 divisors (see below), whose sum is σ = 22283986526208. Its totient is φ = 20383405257600.

The previous prime is 21323113023203. The next prime is 21323113023217. The reversal of 21323113023211 is 11232031132312.

It is a cyclic number.

It is not a de Polignac number, because 21323113023211 - 2³ = 21323113023203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323113023217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65643766 + ... + 65967796.

It is an arithmetic number, because the mean of its divisors is an integer number (1392749157888).

Almost surely, 2^{21323113023211} is an apocalyptic number.

21323113023211 is a deficient number, since it is larger than the sum of its proper divisors (960873502997).

21323113023211 is a wasteful number, since it uses less digits than its factorization.

21323113023211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356682.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21323113023211 its reverse (11232031132312), we get a palindrome (32555144155523).

The spelling of 21323113023211 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirteen million, twenty-three thousand, two hundred eleven".