121896066512 has 80 divisors (see below), whose sum is σ = 271300492800. Its totient is φ = 52472488320.

The previous prime is 121896066451. The next prime is 121896066521. The reversal of 121896066512 is 215660698121.

It is a super-3 number, since 3×121896066512³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13836413 + ... + 13845219.

It is an arithmetic number, because the mean of its divisors is an integer number (3391256160).

Almost surely, 2^121896066512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121896066512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135650246400).

121896066512 is an abundant number, since it is smaller than the sum of its proper divisors (149404426288).

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

121896066512 is a wasteful number, since it uses less digits than its factorization.

121896066512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12984 (or 12978 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 121896066512 in words is "one hundred twenty-one billion, eight hundred ninety-six million, sixty-six thousand, five hundred twelve".