121343550345 has 12 divisors (see below), whose sum is σ = 210328820676. Its totient is φ = 64716560160.

The previous prime is 121343550337. The next prime is 121343550413. The reversal of 121343550345 is 543055343121.

121343550345 is a `hidden beast` number, since 1 + 21 + 3 + 43 + 550 + 3 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86236782921 + 35106767424 = 293661^2 + 187368^2 .

It is not a de Polignac number, because 121343550345 - 2³ = 121343550337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1348261626 + ... + 1348261715.

It is an arithmetic number, because the mean of its divisors is an integer number (17527401723).

Almost surely, 2^121343550345 is an apocalyptic number.

121343550345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121343550345 is a deficient number, since it is larger than the sum of its proper divisors (88985270331).

121343550345 is a wasteful number, since it uses less digits than its factorization.

121343550345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696523352 (or 2696523349 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 121343550345 its reverse (543055343121), we get a palindrome (664398893466).

The spelling of 121343550345 in words is "one hundred twenty-one billion, three hundred forty-three million, five hundred fifty thousand, three hundred forty-five".