121327747 has 4 divisors (see below), whose sum is σ = 121604560. Its totient is φ = 121050936.

The previous prime is 121327741. The next prime is 121327757. The reversal of 121327747 is 747723121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121327747 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 137748 + ... + 138625.

It is an arithmetic number, because the mean of its divisors is an integer number (30401140).

Almost surely, 2^121327747 is an apocalyptic number.

121327747 is a deficient number, since it is larger than the sum of its proper divisors (276813).

121327747 is an equidigital number, since it uses as much as digits as its factorization.

121327747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276812.

The product of its digits is 16464, while the sum is 34.

The square root of 121327747 is about 11014.8875164479. The cubic root of 121327747 is about 495.0549161941.

The spelling of 121327747 in words is "one hundred twenty-one million, three hundred twenty-seven thousand, seven hundred forty-seven".