121210120112016 has 80 divisors (see below), whose sum is σ = 345437471836800. Its totient is φ = 36385777136640.

The previous prime is 121210120112009. The next prime is 121210120112017. The reversal of 121210120112016 is 610211021012121.

121210120112016 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121210120111983 and 121210120112001.

It is not an unprimeable number, because it can be changed into a prime (121210120112017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2368840116 + ... + 2368891283.

It is an arithmetic number, because the mean of its divisors is an integer number (4317968397960).

Almost surely, 2^{121210120112016} is an apocalyptic number.

121210120112016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121210120112016 is an abundant number, since it is smaller than the sum of its proper divisors (224227351724784).

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

121210120112016 is a wasteful number, since it uses less digits than its factorization.

121210120112016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737731464 (or 4737731458 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 121210120112016 its reverse (610211021012121), we get a palindrome (731421141124137).

The spelling of 121210120112016 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred twelve thousand, sixteen".