3871210257212 has 24 divisors (see below), whose sum is σ = 7137799259136. Its totient is φ = 1833473152368.

The previous prime is 3871210257209. The next prime is 3871210257247. The reversal of 3871210257212 is 2127520121783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871210257212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204254468 + ... + 204273419.

It is an arithmetic number, because the mean of its divisors is an integer number (297408302464).

Almost surely, 2^{3871210257212} is an apocalyptic number.

It is an amenable number.

3871210257212 is a deficient number, since it is larger than the sum of its proper divisors (3266589001924).

3871210257212 is a wasteful number, since it uses less digits than its factorization.

3871210257212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408528017 (or 408528015 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

Adding to 3871210257212 its reverse (2127520121783), we get a palindrome (5998730378995).

The spelling of 3871210257212 in words is "three trillion, eight hundred seventy-one billion, two hundred ten million, two hundred fifty-seven thousand, two hundred twelve".