20201211311103 has 6 divisors (see below), whose sum is σ = 29179527449384. Its totient is φ = 13467474207396.

The previous prime is 20201211311063. The next prime is 20201211311117. The reversal of 20201211311103 is 30111311210202.

20201211311103 is a `hidden beast` number, since 20 + 20 + 1 + 211 + 311 + 103 = 666.

It is not a de Polignac number, because 20201211311103 - 2⁴² = 15803164799999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201211311143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122289517275 + ... + 1122289517292.

Almost surely, 2^{20201211311103} is an apocalyptic number.

20201211311103 is a deficient number, since it is larger than the sum of its proper divisors (8978316138281).

20201211311103 is a wasteful number, since it uses less digits than its factorization.

20201211311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244579034573 (or 2244579034570 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20201211311103 its reverse (30111311210202), we get a palindrome (50312522521305).

The spelling of 20201211311103 in words is "twenty trillion, two hundred one billion, two hundred eleven million, three hundred eleven thousand, one hundred three".