210131321212 has 24 divisors (see below), whose sum is σ = 382042861200. Its totient is φ = 101007317376.

The previous prime is 210131321171. The next prime is 210131321243. The reversal of 210131321212 is 212123131012.

210131321212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210131321212² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210131321212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860262 + ... + 3914317.

It is an arithmetic number, because the mean of its divisors is an integer number (15918452550).

Almost surely, 2^210131321212 is an apocalyptic number.

It is an amenable number.

210131321212 is a deficient number, since it is larger than the sum of its proper divisors (171911539988).

210131321212 is a wasteful number, since it uses less digits than its factorization.

210131321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774845 (or 7774843 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 210131321212 its reverse (212123131012), we get a palindrome (422254452224).

The spelling of 210131321212 in words is "two hundred ten billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred twelve".