210130231230021 has 8 divisors (see below), whose sum is σ = 280178780678784. Its totient is φ = 140084251300640.

The previous prime is 210130231229983. The next prime is 210130231230043. The reversal of 210130231230021 is 120032132031012.

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 210130231230021 - 2⁴⁶ = 139761487052357 is a prime.

It is a super-2 number, since 2×210130231230021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210130231230021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210130231230421) 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, 642189021 + ... + 642516146.

It is an arithmetic number, because the mean of its divisors is an integer number (35022347584848).

Almost surely, 2^{210130231230021} is an apocalyptic number.

It is an amenable number.

210130231230021 is a deficient number, since it is larger than the sum of its proper divisors (70048549448763).

210130231230021 is a wasteful number, since it uses less digits than its factorization.

210130231230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284759691.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 210130231230021 its reverse (120032132031012), we get a palindrome (330162363261033).

The spelling of 210130231230021 in words is "two hundred ten trillion, one hundred thirty billion, two hundred thirty-one million, two hundred thirty thousand, twenty-one".