12151207 has 4 divisors (see below), whose sum is σ = 12479656. Its totient is φ = 11822760.

The previous prime is 12151189. The next prime is 12151231. The reversal of 12151207 is 70215121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70215121 = 79 ⋅888799.

It is a cyclic number.

It is not a de Polignac number, because 12151207 - 2²³ = 3762599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164169 + ... + 164242.

It is an arithmetic number, because the mean of its divisors is an integer number (3119914).

Almost surely, 2^12151207 is an apocalyptic number.

12151207 is a deficient number, since it is larger than the sum of its proper divisors (328449).

12151207 is an equidigital number, since it uses as much as digits as its factorization.

12151207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328448.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 12151207 is about 3485.8581439869. The cubic root of 12151207 is about 229.9004421037.

Adding to 12151207 its reverse (70215121), we get a palindrome (82366328).

The spelling of 12151207 in words is "twelve million, one hundred fifty-one thousand, two hundred seven".