121327761 has 16 divisors (see below), whose sum is σ = 163766016. Its totient is φ = 79892736.

The previous prime is 121327757. The next prime is 121327781. The reversal of 121327761 is 167723121.

It is not a de Polignac number, because 121327761 - 2² = 121327757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121327741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156571 + ... + 157343.

It is an arithmetic number, because the mean of its divisors is an integer number (10235376).

Almost surely, 2^121327761 is an apocalyptic number.

It is an amenable number.

121327761 is a deficient number, since it is larger than the sum of its proper divisors (42438255).

121327761 is a wasteful number, since it uses less digits than its factorization.

121327761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 3528, while the sum is 30.

The square root of 121327761 is about 11014.8881519514. Note that the first 3 decimals coincide. The cubic root of 121327761 is about 495.0549352356.

The spelling of 121327761 in words is "one hundred twenty-one million, three hundred twenty-seven thousand, seven hundred sixty-one".