121153346729 has 8 divisors (see below), whose sum is σ = 122061602880. Its totient is φ = 120245614416.

The previous prime is 121153346711. The next prime is 121153346747. The reversal of 121153346729 is 927643351121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121153346711) and next prime (121153346747).

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

It is a cyclic number.

It is not a de Polignac number, because 121153346729 - 2⁸ = 121153346473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121153346729.

It is not an unprimeable number, because it can be changed into a prime (121153346789) 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, 339644 + ... + 598050.

It is an arithmetic number, because the mean of its divisors is an integer number (15257700360).

Almost surely, 2^121153346729 is an apocalyptic number.

It is an amenable number.

121153346729 is a deficient number, since it is larger than the sum of its proper divisors (908256151).

121153346729 is a wasteful number, since it uses less digits than its factorization.

121153346729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261919.

The product of its digits is 272160, while the sum is 44.

The spelling of 121153346729 in words is "one hundred twenty-one billion, one hundred fifty-three million, three hundred forty-six thousand, seven hundred twenty-nine".