210323142310021 has 8 divisors (see below), whose sum is σ = 226502548240640. Its totient is φ = 194143836761712.

The previous prime is 210323142310019. The next prime is 210323142310027. The reversal of 210323142310021 is 120013241323012.

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

It is a cyclic number.

It is not a de Polignac number, because 210323142310021 - 2¹ = 210323142310019 is a prime.

It is a super-2 number, since 2×210323142310021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210323142310027) 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, 20715645 + ... + 29151058.

It is an arithmetic number, because the mean of its divisors is an integer number (28312818530080).

Almost surely, 2^{210323142310021} is an apocalyptic number.

It is an amenable number.

210323142310021 is a deficient number, since it is larger than the sum of its proper divisors (16179405930619).

210323142310021 is a wasteful number, since it uses less digits than its factorization.

210323142310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50191155.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 210323142310021 its reverse (120013241323012), we get a palindrome (330336383633033).

The spelling of 210323142310021 in words is "two hundred ten trillion, three hundred twenty-three billion, one hundred forty-two million, three hundred ten thousand, twenty-one".