121421054303345 has 64 divisors (see below), whose sum is σ = 151518257130240. Its totient is φ = 93345089789952.

The previous prime is 121421054303321. The next prime is 121421054303387. The reversal of 121421054303345 is 543303450124121.

It is a cyclic number.

It is not a de Polignac number, because 121421054303345 - 2³⁰ = 121419980561521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121421054303299 and 121421054303308.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6104925161 + ... + 6104945049.

It is an arithmetic number, because the mean of its divisors is an integer number (2367472767660).

Almost surely, 2^{121421054303345} is an apocalyptic number.

It is an amenable number.

121421054303345 is a deficient number, since it is larger than the sum of its proper divisors (30097202826895).

121421054303345 is a wasteful number, since it uses less digits than its factorization.

121421054303345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21426.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 121421054303345 in words is "one hundred twenty-one trillion, four hundred twenty-one billion, fifty-four million, three hundred three thousand, three hundred forty-five".