121275157 has 8 divisors (see below), whose sum is σ = 127769600. Its totient is φ = 114791904.

The previous prime is 121275151. The next prime is 121275169. The reversal of 121275157 is 751572121.

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 121275157 - 2¹¹ = 121273109 is a prime.

It is the 11013-rd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121275151) by changing a digit.

It is a nontrivial repunit in base 11012.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28588 + ... + 32554.

It is an arithmetic number, because the mean of its divisors is an integer number (15971200).

Almost surely, 2^121275157 is an apocalyptic number.

It is an amenable number.

121275157 is a deficient number, since it is larger than the sum of its proper divisors (6494443).

121275157 is a wasteful number, since it uses less digits than its factorization.

121275157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595.

The product of its digits is 4900, while the sum is 31.

The square root of 121275157 is about 11012.5000340522. The cubic root of 121275157 is about 494.9833780087.

The spelling of 121275157 in words is "one hundred twenty-one million, two hundred seventy-five thousand, one hundred fifty-seven".