65121712101042 has 16 divisors (see below), whose sum is σ = 130268485535232. Its totient is φ = 21703060478160.

The previous prime is 65121712101041. The next prime is 65121712101059. The reversal of 65121712101042 is 24010121712156.

It is a junction number, because it is equal to n+sod(n) for n = 65121712100994 and 65121712101012.

It is not an unprimeable number, because it can be changed into a prime (65121712101041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044188434 + ... + 1044250797.

It is an arithmetic number, because the mean of its divisors is an integer number (8141780345952).

Almost surely, 2^{65121712101042} is an apocalyptic number.

65121712101042 is an abundant number, since it is smaller than the sum of its proper divisors (65146773434190).

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

65121712101042 is a wasteful number, since it uses less digits than its factorization.

65121712101042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088444433.

The product of its (nonzero) digits is 6720, while the sum is 33.

Adding to 65121712101042 its reverse (24010121712156), we get a palindrome (89131833813198).

The spelling of 65121712101042 in words is "sixty-five trillion, one hundred twenty-one billion, seven hundred twelve million, one hundred one thousand, forty-two".