12099256961 has 8 divisors (see below), whose sum is σ = 13251778848. Its totient is φ = 10955500000.

The previous prime is 12099256957. The next prime is 12099256969. The reversal of 12099256961 is 16965299021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12099256961 - 2² = 12099256957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12099256969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2188340 + ... + 2193861.

It is an arithmetic number, because the mean of its divisors is an integer number (1656472356).

Almost surely, 2^12099256961 is an apocalyptic number.

12099256961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12099256961 is a deficient number, since it is larger than the sum of its proper divisors (1152521887).

12099256961 is a wasteful number, since it uses less digits than its factorization.

12099256961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382463.

The product of its (nonzero) digits is 524880, while the sum is 50.

The spelling of 12099256961 in words is "twelve billion, ninety-nine million, two hundred fifty-six thousand, nine hundred sixty-one".