121466178057 has 16 divisors (see below), whose sum is σ = 188868694400. Its totient is φ = 69409244016.

The previous prime is 121466178037. The next prime is 121466178061. The reversal of 121466178057 is 750871664121.

It is not a de Polignac number, because 121466178057 - 2⁶ = 121466177993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121466177997 and 121466178015.

It is not an unprimeable number, because it can be changed into a prime (121466178037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59020438 + ... + 59022495.

It is an arithmetic number, because the mean of its divisors is an integer number (11804293400).

Almost surely, 2^121466178057 is an apocalyptic number.

It is an amenable number.

121466178057 is a deficient number, since it is larger than the sum of its proper divisors (67402516343).

121466178057 is an equidigital number, since it uses as much as digits as its factorization.

121466178057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118042957 (or 118042943 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 121466178057 in words is "one hundred twenty-one billion, four hundred sixty-six million, one hundred seventy-eight thousand, fifty-seven".