121103121 has 8 divisors (see below), whose sum is σ = 170969184. Its totient is φ = 75986240.

The previous prime is 121103113. The next prime is 121103123. The reversal of 121103121 is 121301121.

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 121103121 - 2³ = 121103113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121103097 and 121103106.

It is not an unprimeable number, because it can be changed into a prime (121103123) 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, 1187235 + ... + 1187336.

It is an arithmetic number, because the mean of its divisors is an integer number (21371148).

Almost surely, 2^121103121 is an apocalyptic number.

It is an amenable number.

121103121 is a deficient number, since it is larger than the sum of its proper divisors (49866063).

121103121 is a wasteful number, since it uses less digits than its factorization.

121103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374591.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 121103121 is about 11004.6863199275. The cubic root of 121103121 is about 494.7492128257.

Adding to 121103121 its reverse (121301121), we get a palindrome (242404242).

The spelling of 121103121 in words is "one hundred twenty-one million, one hundred three thousand, one hundred twenty-one".