12020977 has 4 divisors (see below), whose sum is σ = 12653680. Its totient is φ = 11388276.

The previous prime is 12020947. The next prime is 12021001. The reversal of 12020977 is 77902021.

It is a happy number.

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 12020977 - 2¹⁹ = 11496689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020917) 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, 316323 + ... + 316360.

It is an arithmetic number, because the mean of its divisors is an integer number (3163420).

Almost surely, 2^12020977 is an apocalyptic number.

It is an amenable number.

12020977 is a deficient number, since it is larger than the sum of its proper divisors (632703).

12020977 is an equidigital number, since it uses as much as digits as its factorization.

12020977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632702.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 12020977 is about 3467.1280622440. The cubic root of 12020977 is about 229.0761745784.

Adding to 12020977 its reverse (77902021), we get a palindrome (89922998).

The spelling of 12020977 in words is "twelve million, twenty thousand, nine hundred seventy-seven".