20201100211111 has 8 divisors (see below), whose sum is σ = 20444127958800. Its totient is φ = 19958782034688.

The previous prime is 20201100211109. The next prime is 20201100211129. The reversal of 20201100211111 is 11111200110202.

It is a happy number.

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 20201100211111 - 2¹ = 20201100211109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201100211091 and 20201100211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201100218111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177335536 + ... + 177449413.

It is an arithmetic number, because the mean of its divisors is an integer number (2555515994850).

Almost surely, 2^{20201100211111} is an apocalyptic number.

20201100211111 is a deficient number, since it is larger than the sum of its proper divisors (243027747689).

20201100211111 is an equidigital number, since it uses as much as digits as its factorization.

20201100211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354785633.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20201100211111 its reverse (11111200110202), we get a palindrome (31312300321313).

The spelling of 20201100211111 in words is "twenty trillion, two hundred one billion, one hundred million, two hundred eleven thousand, one hundred eleven".