20711100111208 has 48 divisors (see below), whose sum is σ = 42053413384620. Its totient is φ = 9558255522816.

The previous prime is 20711100111181. The next prime is 20711100111217. The reversal of 20711100111208 is 80211100111702.

It can be written as a sum of positive squares in 6 ways, for example, as 13116986140644 + 7594113970564 = 3621738^2 + 2755742^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17758510 + ... + 18888802.

Almost surely, 2^{20711100111208} is an apocalyptic number.

It is an amenable number.

20711100111208 is an abundant number, since it is smaller than the sum of its proper divisors (21342313273412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20711100111208 is a wasteful number, since it uses less digits than its factorization.

20711100111208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143878 (or 1143861 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 25.

The spelling of 20711100111208 in words is "twenty trillion, seven hundred eleven billion, one hundred million, one hundred eleven thousand, two hundred eight".