121342566345 has 160 divisors (see below), whose sum is σ = 266100557184. Its totient is φ = 46547020800.

The previous prime is 121342566337. The next prime is 121342566379. The reversal of 121342566345 is 543665243121.

It is not a de Polignac number, because 121342566345 - 2³ = 121342566337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121342566297 and 121342566306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5138365 + ... + 5161925.

Almost surely, 2^121342566345 is an apocalyptic number.

121342566345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121342566345 is an abundant number, since it is smaller than the sum of its proper divisors (144757990839).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121342566345 is a wasteful number, since it uses less digits than its factorization.

121342566345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23621 (or 23600 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 121342566345 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred sixty-six thousand, three hundred forty-five".