12012977 has 4 divisors (see below), whose sum is σ = 12165120. Its totient is φ = 11860836.

The previous prime is 12012971. The next prime is 12013009. The reversal of 12012977 is 77921021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012977 - 2¹⁰ = 12011953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012971) 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, 75953 + ... + 76110.

It is an arithmetic number, because the mean of its divisors is an integer number (3041280).

Almost surely, 2^12012977 is an apocalyptic number.

It is an amenable number.

12012977 is a deficient number, since it is larger than the sum of its proper divisors (152143).

12012977 is an equidigital number, since it uses as much as digits as its factorization.

12012977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152142.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12012977 is about 3465.9741776303. The cubic root of 12012977 is about 229.0253463170.

Adding to 12012977 its reverse (77921021), we get a palindrome (89933998).

The spelling of 12012977 in words is "twelve million, twelve thousand, nine hundred seventy-seven".