121563285 has 8 divisors (see below), whose sum is σ = 194501280. Its totient is φ = 64833744.

The previous prime is 121563271. The next prime is 121563293. The reversal of 121563285 is 582365121.

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

It is not a de Polignac number, because 121563285 - 2⁴ = 121563269 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052095 + ... + 4052124.

It is an arithmetic number, because the mean of its divisors is an integer number (24312660).

Almost surely, 2^121563285 is an apocalyptic number.

121563285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121563285 is a deficient number, since it is larger than the sum of its proper divisors (72937995).

121563285 is an equidigital number, since it uses as much as digits as its factorization.

121563285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104227.

The product of its digits is 14400, while the sum is 33.

The square root of 121563285 is about 11025.5741347106. The cubic root of 121563285 is about 495.3750651927.

The spelling of 121563285 in words is "one hundred twenty-one million, five hundred sixty-three thousand, two hundred eighty-five".