12020077 has 4 divisors (see below), whose sum is σ = 12096796. Its totient is φ = 11943360.

The previous prime is 12020051. The next prime is 12020083. The reversal of 12020077 is 77002021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 7241481 = 2186^2 + 2691^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020077 - 2²³ = 3631469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12027077) 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, 38124 + ... + 38437.

It is an arithmetic number, because the mean of its divisors is an integer number (3024199).

Almost surely, 2^12020077 is an apocalyptic number.

It is an amenable number.

12020077 is a deficient number, since it is larger than the sum of its proper divisors (76719).

12020077 is an equidigital number, since it uses as much as digits as its factorization.

12020077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76718.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 12020077 is about 3466.9982693967. The cubic root of 12020077 is about 229.0704575250.

Adding to 12020077 its reverse (77002021), we get a palindrome (89022098).

The spelling of 12020077 in words is "twelve million, twenty thousand, seventy-seven".