12100979 has 4 divisors (see below), whose sum is σ = 13201080. Its totient is φ = 11000880.

The previous prime is 12100973. The next prime is 12100993. The reversal of 12100979 is 97900121.

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

It is not a de Polignac number, because 12100979 - 2¹² = 12096883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100973) 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, 550034 + ... + 550055.

It is an arithmetic number, because the mean of its divisors is an integer number (3300270).

Almost surely, 2^12100979 is an apocalyptic number.

12100979 is a deficient number, since it is larger than the sum of its proper divisors (1100101).

12100979 is a wasteful number, since it uses less digits than its factorization.

12100979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100100.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 12100979 is about 3478.6461446948. The cubic root of 12100979 is about 229.5832339228.

The spelling of 12100979 in words is "twelve million, one hundred thousand, nine hundred seventy-nine".