20711201 has 16 divisors (see below), whose sum is σ = 24862464. Its totient is φ = 16868544.

The previous prime is 20711179. The next prime is 20711203. The reversal of 20711201 is 10211702.

It is a de Polignac number, because none of the positive numbers 2^k-20711201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31391 + ... + 32043.

It is an arithmetic number, because the mean of its divisors is an integer number (1553904).

Almost surely, 2^20711201 is an apocalyptic number.

It is an amenable number.

20711201 is a deficient number, since it is larger than the sum of its proper divisors (4151263).

20711201 is a wasteful number, since it uses less digits than its factorization.

20711201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

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

The square root of 20711201 is about 4550.9560534024. The cubic root of 20711201 is about 274.6218538119.

Adding to 20711201 its reverse (10211702), we get a palindrome (30922903).

The spelling of 20711201 in words is "twenty million, seven hundred eleven thousand, two hundred one".