121733887 has 4 divisors (see below), whose sum is σ = 132800616. Its totient is φ = 110667160.

The previous prime is 121733873. The next prime is 121733891. The reversal of 121733887 is 788337121.

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-121733887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121733827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5533348 + ... + 5533369.

It is an arithmetic number, because the mean of its divisors is an integer number (33200154).

Almost surely, 2^121733887 is an apocalyptic number.

121733887 is a deficient number, since it is larger than the sum of its proper divisors (11066729).

121733887 is a wasteful number, since it uses less digits than its factorization.

121733887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11066728.

The product of its digits is 56448, while the sum is 40.

The square root of 121733887 is about 11033.3080714716. The cubic root of 121733887 is about 495.6066934428.

The spelling of 121733887 in words is "one hundred twenty-one million, seven hundred thirty-three thousand, eight hundred eighty-seven".