12122487 has 16 divisors (see below), whose sum is σ = 19341280. Its totient is φ = 7459776.

The previous prime is 12122477. The next prime is 12122489. The reversal of 12122487 is 78422121.

It is not a de Polignac number, because 12122487 - 2⁷ = 12122359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122489) 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, 16918 + ... + 17619.

It is an arithmetic number, because the mean of its divisors is an integer number (1208830).

Almost surely, 2^12122487 is an apocalyptic number.

12122487 is a deficient number, since it is larger than the sum of its proper divisors (7218793).

12122487 is a wasteful number, since it uses less digits than its factorization.

12122487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559 (or 34553 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12122487 is about 3481.7362048266. The cubic root of 12122487 is about 229.7191720590.

The spelling of 12122487 in words is "twelve million, one hundred twenty-two thousand, four hundred eighty-seven".