231000121110210 has 128 divisors (see below), whose sum is σ = 561683901312000. Its totient is φ = 60797142497280.

The previous prime is 231000121110203. The next prime is 231000121110221. The reversal of 231000121110210 is 12011121000132.

It is a super-2 number, since 2×231000121110210² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 231000121110210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 487990240 + ... + 488463380.

It is an arithmetic number, because the mean of its divisors is an integer number (4388155479000).

Almost surely, 2^{231000121110210} is an apocalyptic number.

231000121110210 is an abundant number, since it is smaller than the sum of its proper divisors (330683780201790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231000121110210 is a wasteful number, since it uses less digits than its factorization.

231000121110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473996.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 231000121110210 its reverse (12011121000132), we get a palindrome (243011242110342).

The spelling of 231000121110210 in words is "two hundred thirty-one trillion, one hundred twenty-one million, one hundred ten thousand, two hundred ten".