4217129208812 has 24 divisors (see below), whose sum is σ = 7949533090800. Its totient is φ = 1945910223936.

The previous prime is 4217129208779. The next prime is 4217129208869. The reversal of 4217129208812 is 2188029217124.

It is a happy 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, 9299387 + ... + 9742322.

It is an arithmetic number, because the mean of its divisors is an integer number (331230545450).

Almost surely, 2^{4217129208812} is an apocalyptic number.

It is an amenable number.

4217129208812 is a deficient number, since it is larger than the sum of its proper divisors (3732403881988).

4217129208812 is a wasteful number, since it uses less digits than its factorization.

4217129208812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19045985 (or 19045983 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 4217129208812 in words is "four trillion, two hundred seventeen billion, one hundred twenty-nine million, two hundred eight thousand, eight hundred twelve".