121025513345 has 64 divisors (see below), whose sum is σ = 163578175488. Its totient is φ = 85218336000.

The previous prime is 121025513281. The next prime is 121025513351. The reversal of 121025513345 is 543315520121.

It is not a de Polignac number, because 121025513345 - 2⁶ = 121025513281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58663784 + ... + 58665846.

It is an arithmetic number, because the mean of its divisors is an integer number (2555908992).

Almost surely, 2^121025513345 is an apocalyptic number.

It is an amenable number.

121025513345 is a deficient number, since it is larger than the sum of its proper divisors (42552662143).

121025513345 is a wasteful number, since it uses less digits than its factorization.

121025513345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 121025513345 in words is "one hundred twenty-one billion, twenty-five million, five hundred thirteen thousand, three hundred forty-five".