20711100111207 has 16 divisors (see below), whose sum is σ = 30254529397248. Its totient is φ = 12498309855680.

The previous prime is 20711100111181. The next prime is 20711100111217. The reversal of 20711100111207 is 70211100111702.

It is not a de Polignac number, because 20711100111207 - 2⁸ = 20711100110951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711100111217) 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, 1346792943 + ... + 1346808320.

It is an arithmetic number, because the mean of its divisors is an integer number (1890908087328).

Almost surely, 2^{20711100111207} is an apocalyptic number.

20711100111207 is a deficient number, since it is larger than the sum of its proper divisors (9543429286041).

20711100111207 is a wasteful number, since it uses less digits than its factorization.

20711100111207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693601510.

The product of its (nonzero) digits is 196, while the sum is 24.

Adding to 20711100111207 its reverse (70211100111702), we get a palindrome (90922200222909).

The spelling of 20711100111207 in words is "twenty trillion, seven hundred eleven billion, one hundred million, one hundred eleven thousand, two hundred seven".