210217137210842 has 8 divisors (see below), whose sum is σ = 315447972480000. Its totient is φ = 105067813050844.

The previous prime is 210217137210841. The next prime is 210217137210859. The reversal of 210217137210842 is 248012731712012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 210217137210842.

It is not an unprimeable number, because it can be changed into a prime (210217137210841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20377770842 + ... + 20377781157.

It is an arithmetic number, because the mean of its divisors is an integer number (39430996560000).

Almost surely, 2^{210217137210842} is an apocalyptic number.

210217137210842 is a deficient number, since it is larger than the sum of its proper divisors (105230835269158).

210217137210842 is a wasteful number, since it uses less digits than its factorization.

210217137210842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40755554580.

The product of its (nonzero) digits is 75264, while the sum is 41.

Adding to 210217137210842 its reverse (248012731712012), we get a palindrome (458229868922854).

The spelling of 210217137210842 in words is "two hundred ten trillion, two hundred seventeen billion, one hundred thirty-seven million, two hundred ten thousand, eight hundred forty-two".