12111902 has 8 divisors (see below), whose sum is σ = 19819512. Its totient is φ = 5505400.

The previous prime is 12111901. The next prime is 12111907. The reversal of 12111902 is 20911121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111901) 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 3 ways as a sum of consecutive naturals, for example, 275249 + ... + 275292.

It is an arithmetic number, because the mean of its divisors is an integer number (2477439).

Almost surely, 2^12111902 is an apocalyptic number.

12111902 is a deficient number, since it is larger than the sum of its proper divisors (7707610).

12111902 is a wasteful number, since it uses less digits than its factorization.

12111902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550554.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 12111902 is about 3480.2157979068. The cubic root of 12111902 is about 229.6522912419.

It can be divided in two parts, 1211 and 1902, that added together give a palindrome (3113).

The spelling of 12111902 in words is "twelve million, one hundred eleven thousand, nine hundred two".