12121100997 has 8 divisors (see below), whose sum is σ = 17112142656. Its totient is φ = 7605396672.

The previous prime is 12121100933. The next prime is 12121101011. The reversal of 12121100997 is 79900112121.

12121100997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12121100997 - 2⁶ = 12121100933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121100917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118834273 + ... + 118834374.

It is an arithmetic number, because the mean of its divisors is an integer number (2139017832).

Almost surely, 2^12121100997 is an apocalyptic number.

12121100997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12121100997 is a deficient number, since it is larger than the sum of its proper divisors (4991041659).

12121100997 is a wasteful number, since it uses less digits than its factorization.

12121100997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237668667.

The product of its (nonzero) digits is 2268, while the sum is 33.

The spelling of 12121100997 in words is "twelve billion, one hundred twenty-one million, one hundred thousand, nine hundred ninety-seven".