121575473027666 has 32 divisors (see below), whose sum is σ = 213145496616960. Its totient is φ = 50924257866576.

The previous prime is 121575473027653. The next prime is 121575473027753. The reversal of 121575473027666 is 666720374575121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121575473027599 and 121575473027608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128014490 + ... + 128960693.

It is an arithmetic number, because the mean of its divisors is an integer number (6660796769280).

Almost surely, 2^{121575473027666} is an apocalyptic number.

121575473027666 is a deficient number, since it is larger than the sum of its proper divisors (91570023589294).

121575473027666 is a wasteful number, since it uses less digits than its factorization.

121575473027666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256975958.

The product of its (nonzero) digits is 88905600, while the sum is 62.

The spelling of 121575473027666 in words is "one hundred twenty-one trillion, five hundred seventy-five billion, four hundred seventy-three million, twenty-seven thousand, six hundred sixty-six".