121563123 has 8 divisors (see below), whose sum is σ = 176819136. Its totient is φ = 73674600.

The previous prime is 121563089. The next prime is 121563131. The reversal of 121563123 is 321365121.

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

It is not a de Polignac number, because 121563123 - 2¹⁰ = 121562099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121563093 and 121563102.

It is not an unprimeable number, because it can be changed into a prime (121563163) 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, 1841833 + ... + 1841898.

It is an arithmetic number, because the mean of its divisors is an integer number (22102392).

Almost surely, 2^121563123 is an apocalyptic number.

121563123 is a deficient number, since it is larger than the sum of its proper divisors (55256013).

121563123 is a wasteful number, since it uses less digits than its factorization.

121563123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683745.

The product of its digits is 1080, while the sum is 24.

The square root of 121563123 is about 11025.5667881520. The cubic root of 121563123 is about 495.3748451405.

The spelling of 121563123 in words is "one hundred twenty-one million, five hundred sixty-three thousand, one hundred twenty-three".