121405545152 has 28 divisors (see below), whose sum is σ = 255085550280. Its totient is φ = 57132020736.

The previous prime is 121405545119. The next prime is 121405545167. The reversal of 121405545152 is 251545504121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55791902 + ... + 55794077.

Almost surely, 2^121405545152 is an apocalyptic number.

It is an amenable number.

121405545152 is an abundant number, since it is smaller than the sum of its proper divisors (133680005128).

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

121405545152 is a wasteful number, since it uses less digits than its factorization.

121405545152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111586008 (or 111585998 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 121405545152 in words is "one hundred twenty-one billion, four hundred five million, five hundred forty-five thousand, one hundred fifty-two".