12101938 has 4 divisors (see below), whose sum is σ = 18152910. Its totient is φ = 6050968.

The previous prime is 12101927. The next prime is 12102001. The reversal of 12101938 is 83910121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83910121 = 3373 ⋅24877.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 859329 = 3353^2 + 927^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3025483 + ... + 3025486.

Almost surely, 2^12101938 is an apocalyptic number.

12101938 is a deficient number, since it is larger than the sum of its proper divisors (6050972).

12101938 is an equidigital number, since it uses as much as digits as its factorization.

12101938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050971.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 12101938 is about 3478.7839829458. The cubic root of 12101938 is about 229.5892985700.

The spelling of 12101938 in words is "twelve million, one hundred one thousand, nine hundred thirty-eight".