121555032684 has 12 divisors (see below), whose sum is σ = 283628409624. Its totient is φ = 40518344224.

The previous prime is 121555032671. The next prime is 121555032691. The reversal of 121555032684 is 486230555121.

121555032684 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 5064793017 + ... + 5064793040.

It is an arithmetic number, because the mean of its divisors is an integer number (23635700802).

Almost surely, 2^121555032684 is an apocalyptic number.

It is an amenable number.

121555032684 is an abundant number, since it is smaller than the sum of its proper divisors (162073376940).

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

121555032684 is a wasteful number, since it uses less digits than its factorization.

121555032684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129586064 (or 10129586062 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 121555032684 in words is "one hundred twenty-one billion, five hundred fifty-five million, thirty-two thousand, six hundred eighty-four".