121455555052 has 24 divisors (see below), whose sum is σ = 236790010800. Its totient is φ = 54123429696.

The previous prime is 121455555049. The next prime is 121455555077. The reversal of 121455555052 is 250555554121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121455554996 and 121455555014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40268902 + ... + 40271917.

It is an arithmetic number, because the mean of its divisors is an integer number (9866250450).

Almost surely, 2^121455555052 is an apocalyptic number.

It is an amenable number.

121455555052 is a deficient number, since it is larger than the sum of its proper divisors (115334455748).

121455555052 is a wasteful number, since it uses less digits than its factorization.

121455555052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80540865 (or 80540863 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 40.

The spelling of 121455555052 in words is "one hundred twenty-one billion, four hundred fifty-five million, five hundred fifty-five thousand, fifty-two".