121485105408 has 144 divisors (see below), whose sum is σ = 334074761216. Its totient is φ = 39151503360.

The previous prime is 121485105389. The next prime is 121485105431. The reversal of 121485105408 is 804501584121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36734091 + ... + 36737397.

Almost surely, 2^121485105408 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 121485105408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167037380608).

121485105408 is an abundant number, since it is smaller than the sum of its proper divisors (212589655808).

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

121485105408 is a wasteful number, since it uses less digits than its factorization.

121485105408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900 (or 4886 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 39.

Adding to 121485105408 its reverse (804501584121), we get a palindrome (925986689529).

The spelling of 121485105408 in words is "one hundred twenty-one billion, four hundred eighty-five million, one hundred five thousand, four hundred eight".