121545567 has 24 divisors (see below), whose sum is σ = 206261328. Its totient is φ = 67996800.

The previous prime is 121545551. The next prime is 121545569. The reversal of 121545567 is 765545121.

It is not a de Polignac number, because 121545567 - 2⁴ = 121545551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121545569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45934 + ... + 48507.

It is an arithmetic number, because the mean of its divisors is an integer number (8594222).

Almost surely, 2^121545567 is an apocalyptic number.

121545567 is a deficient number, since it is larger than the sum of its proper divisors (84715761).

121545567 is a wasteful number, since it uses less digits than its factorization.

121545567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94471 (or 94468 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 121545567 is about 11024.7706098585. The cubic root of 121545567 is about 495.3509968460.

The spelling of 121545567 in words is "one hundred twenty-one million, five hundred forty-five thousand, five hundred sixty-seven".