12111950 has 24 divisors (see below), whose sum is σ = 23140632. Its totient is φ = 4713120.

The previous prime is 12111929. The next prime is 12111989. The reversal of 12111950 is 5911121.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 1424 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (964193).

Almost surely, 2^12111950 is an apocalyptic number.

12111950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111950 is a deficient number, since it is larger than the sum of its proper divisors (11028682).

12111950 is a wasteful number, since it uses less digits than its factorization.

12111950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596 (or 6591 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 12111950 is about 3480.2226940240. Note that the first 3 decimals coincide. The cubic root of 12111950 is about 229.6525946155.

The spelling of 12111950 in words is "twelve million, one hundred eleven thousand, nine hundred fifty".