121855450084 has 27 divisors (see below), whose sum is σ = 226550925993. Its totient is φ = 57338155968.

The previous prime is 121855450063. The next prime is 121855450133. The reversal of 121855450084 is 480054558121.

The square root of 121855450084 is 349078.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 94870160100 + 26985289984 = 308010^2 + 164272^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121855450084.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11863519 + ... + 11873785.

Almost surely, 2^121855450084 is an apocalyptic number.

121855450084 is the 349078-th square number.

It is an amenable number.

121855450084 is a deficient number, since it is larger than the sum of its proper divisors (104695475909).

121855450084 is an frugal number, since it uses more digits than its factorization.

121855450084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20572 (or 10286 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 43.

The spelling of 121855450084 in words is "one hundred twenty-one billion, eight hundred fifty-five million, four hundred fifty thousand, eighty-four".