121105507 has 4 divisors (see below), whose sum is σ = 121139416. Its totient is φ = 121071600.

The previous prime is 121105469. The next prime is 121105529. The reversal of 121105507 is 705501121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121105507 - 2⁷ = 121105379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121105547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10869 + ... + 18982.

It is an arithmetic number, because the mean of its divisors is an integer number (30284854).

Almost surely, 2^121105507 is an apocalyptic number.

121105507 is a deficient number, since it is larger than the sum of its proper divisors (33909).

121105507 is an equidigital number, since it uses as much as digits as its factorization.

121105507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33908.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 121105507 is about 11004.7947277539. The cubic root of 121105507 is about 494.7524620232.

Adding to 121105507 its reverse (705501121), we get a palindrome (826606628).

The spelling of 121105507 in words is "one hundred twenty-one million, one hundred five thousand, five hundred seven".