996752121 has 4 divisors (see below), whose sum is σ = 1329002832. Its totient is φ = 664501412.

The previous prime is 996752111. The next prime is 996752161. The reversal of 996752121 is 121257699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 996752121 - 2⁵ = 996752089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996752101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166125351 + ... + 166125356.

It is an arithmetic number, because the mean of its divisors is an integer number (332250708).

Almost surely, 2^996752121 is an apocalyptic number.

It is an amenable number.

996752121 is a deficient number, since it is larger than the sum of its proper divisors (332250711).

996752121 is a wasteful number, since it uses less digits than its factorization.

996752121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332250710.

The product of its digits is 68040, while the sum is 42.

The square root of 996752121 is about 31571.3813603396. The cubic root of 996752121 is about 998.9161994674.

The spelling of 996752121 in words is "nine hundred ninety-six million, seven hundred fifty-two thousand, one hundred twenty-one".