121255113329 has 8 divisors (see below), whose sum is σ = 138583538688. Its totient is φ = 103928254560.

The previous prime is 121255113313. The next prime is 121255113361. The reversal of 121255113329 is 923311552121.

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 121255113329 - 2⁴ = 121255113313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121255118329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220817 + ... + 539694.

It is an arithmetic number, because the mean of its divisors is an integer number (17322942336).

Almost surely, 2^121255113329 is an apocalyptic number.

It is an amenable number.

121255113329 is a deficient number, since it is larger than the sum of its proper divisors (17328425359).

121255113329 is an equidigital number, since it uses as much as digits as its factorization.

121255113329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783295.

The product of its digits is 16200, while the sum is 35.

The spelling of 121255113329 in words is "one hundred twenty-one billion, two hundred fifty-five million, one hundred thirteen thousand, three hundred twenty-nine".