121560617269 has 8 divisors (see below), whose sum is σ = 149613067520. Its totient is φ = 96179828976.

The previous prime is 121560617263. The next prime is 121560617273. The reversal of 121560617269 is 962716065121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121560617269 - 2³ = 121560617261 is a prime.

It is a super-2 number, since 2×121560617269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121560617261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 667915389 + ... + 667915570.

It is an arithmetic number, because the mean of its divisors is an integer number (18701633440).

Almost surely, 2^121560617269 is an apocalyptic number.

It is an amenable number.

121560617269 is a deficient number, since it is larger than the sum of its proper divisors (28052450251).

121560617269 is a wasteful number, since it uses less digits than its factorization.

121560617269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335830979.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 121560617269 in words is "one hundred twenty-one billion, five hundred sixty million, six hundred seventeen thousand, two hundred sixty-nine".