12120287 has 16 divisors (see below), whose sum is σ = 13271040. Its totient is φ = 11035200.

The previous prime is 12120257. The next prime is 12120293. The reversal of 12120287 is 78202121.

It is a cyclic number.

It is not a de Polignac number, because 12120287 - 2⁶ = 12120223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63362 + ... + 63552.

It is an arithmetic number, because the mean of its divisors is an integer number (829440).

Almost surely, 2^12120287 is an apocalyptic number.

12120287 is a deficient number, since it is larger than the sum of its proper divisors (1150753).

12120287 is a wasteful number, since it uses less digits than its factorization.

12120287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12120287 is about 3481.4202561598. The cubic root of 12120287 is about 229.7052746699.

The spelling of 12120287 in words is "twelve million, one hundred twenty thousand, two hundred eighty-seven".