20712011 has 8 divisors (see below), whose sum is σ = 21342048. Its totient is φ = 20088000.

The previous prime is 20711987. The next prime is 20712019. The reversal of 20712011 is 11021702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20712011 - 2⁶ = 20711947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20712019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6026 + ... + 8816.

It is an arithmetic number, because the mean of its divisors is an integer number (2667756).

Almost surely, 2^20712011 is an apocalyptic number.

20712011 is a deficient number, since it is larger than the sum of its proper divisors (630037).

20712011 is a wasteful number, since it uses less digits than its factorization.

20712011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013.

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

The square root of 20712011 is about 4551.0450448221. The cubic root of 20712011 is about 274.6254338522.

Adding to 20712011 its reverse (11021702), we get a palindrome (31733713).

The spelling of 20712011 in words is "twenty million, seven hundred twelve thousand, eleven".