121155927 has 8 divisors (see below), whose sum is σ = 168564864. Its totient is φ = 77258808.

The previous prime is 121155919. The next prime is 121155929. The reversal of 121155927 is 729551121.

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

It is not a de Polignac number, because 121155927 - 2³ = 121155919 is a prime.

It is a super-3 number, since 3×121155927³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121155929) 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, 877873 + ... + 878010.

It is an arithmetic number, because the mean of its divisors is an integer number (21070608).

Almost surely, 2^121155927 is an apocalyptic number.

121155927 is a deficient number, since it is larger than the sum of its proper divisors (47408937).

121155927 is a wasteful number, since it uses less digits than its factorization.

121155927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755909.

The product of its digits is 6300, while the sum is 33.

The square root of 121155927 is about 11007.0853090180. The cubic root of 121155927 is about 494.8211127909.

The spelling of 121155927 in words is "one hundred twenty-one million, one hundred fifty-five thousand, nine hundred twenty-seven".