12020711 has 4 divisors (see below), whose sum is σ = 12653400. Its totient is φ = 11388024.

The previous prime is 12020707. The next prime is 12020713. The reversal of 12020711 is 11702021.

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

It is a cyclic number.

It is not a de Polignac number, because 12020711 - 2² = 12020707 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 (12020713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316316 + ... + 316353.

It is an arithmetic number, because the mean of its divisors is an integer number (3163350).

Almost surely, 2^12020711 is an apocalyptic number.

12020711 is a deficient number, since it is larger than the sum of its proper divisors (632689).

12020711 is an equidigital number, since it uses as much as digits as its factorization.

12020711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632688.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 12020711 is about 3467.0897017528. The cubic root of 12020711 is about 229.0744849012.

Adding to 12020711 its reverse (11702021), we get a palindrome (23722732).

The spelling of 12020711 in words is "twelve million, twenty thousand, seven hundred eleven".