21210230323311 has 8 divisors (see below), whose sum is σ = 28282014190464. Its totient is φ = 14139300002520.

The previous prime is 21210230323309. The next prime is 21210230323313. The reversal of 21210230323311 is 11332303201212.

It is an interprime number because it is at equal distance from previous prime (21210230323309) and next prime (21210230323313).

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

It is not a de Polignac number, because 21210230323311 - 2¹ = 21210230323309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210230323313) 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, 213328605 + ... + 213428006.

It is an arithmetic number, because the mean of its divisors is an integer number (3535251773808).

Almost surely, 2^{21210230323311} is an apocalyptic number.

21210230323311 is a deficient number, since it is larger than the sum of its proper divisors (7071783867153).

21210230323311 is a wasteful number, since it uses less digits than its factorization.

21210230323311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426773181.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21210230323311 its reverse (11332303201212), we get a palindrome (32542533524523).

The spelling of 21210230323311 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty million, three hundred twenty-three thousand, three hundred eleven".