121105761 has 16 divisors (see below), whose sum is σ = 186447744. Its totient is φ = 68488704.

The previous prime is 121105757. The next prime is 121105781. The reversal of 121105761 is 167501121.

It is not a de Polignac number, because 121105761 - 2² = 121105757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121105781) 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 15 ways as a sum of consecutive naturals, for example, 27690 + ... + 31763.

It is an arithmetic number, because the mean of its divisors is an integer number (11652984).

Almost surely, 2^121105761 is an apocalyptic number.

It is an amenable number.

121105761 is a deficient number, since it is larger than the sum of its proper divisors (65341983).

121105761 is an equidigital number, since it uses as much as digits as its factorization.

121105761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59560.

The product of its (nonzero) digits is 420, while the sum is 24.

The square root of 121105761 is about 11004.8062681721. The cubic root of 121105761 is about 494.7528079118.

Adding to 121105761 its reverse (167501121), we get a palindrome (288606882).

It can be divided in two parts, 12110 and 5761, that added together give a palindrome (17871).

The spelling of 121105761 in words is "one hundred twenty-one million, one hundred five thousand, seven hundred sixty-one".