121449605472 has 96 divisors (see below), whose sum is σ = 381476360160. Its totient is φ = 37369105920.

The previous prime is 121449605419. The next prime is 121449605477. The reversal of 121449605472 is 274506944121.

121449605472 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 49 + 60 + 547 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121449605477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5395179 + ... + 5417642.

It is an arithmetic number, because the mean of its divisors is an integer number (3973712085).

Almost surely, 2^121449605472 is an apocalyptic number.

121449605472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121449605472 is an abundant number, since it is smaller than the sum of its proper divisors (260026754688).

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

121449605472 is a wasteful number, since it uses less digits than its factorization.

121449605472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812853 (or 10812839 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 121449605472 in words is "one hundred twenty-one billion, four hundred forty-nine million, six hundred five thousand, four hundred seventy-two".