121255575 has 48 divisors (see below), whose sum is σ = 232413696. Its totient is φ = 54633600.

The previous prime is 121255559. The next prime is 121255591. The reversal of 121255575 is 575552121.

It is an interprime number because it is at equal distance from previous prime (121255559) and next prime (121255591).

It is not a de Polignac number, because 121255575 - 2⁴ = 121255559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35649 + ... + 38901.

It is an arithmetic number, because the mean of its divisors is an integer number (4841952).

Almost surely, 2^121255575 is an apocalyptic number.

121255575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121255575 is a deficient number, since it is larger than the sum of its proper divisors (111158121).

121255575 is a wasteful number, since it uses less digits than its factorization.

121255575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3339 counting only the distinct ones).

The product of its digits is 17500, while the sum is 33.

The square root of 121255575 is about 11011.6109175724. The cubic root of 121255575 is about 494.9567353269.

The spelling of 121255575 in words is "one hundred twenty-one million, two hundred fifty-five thousand, five hundred seventy-five".