20200111012111 has 4 divisors (see below), whose sum is σ = 20201454923824. Its totient is φ = 20198767100400.

The previous prime is 20200111012099. The next prime is 20200111012121. The reversal of 20200111012111 is 11121011100202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20200111012111 - 2⁹ = 20200111011599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200111012091 and 20200111012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111012121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671933310 + ... + 671963371.

It is an arithmetic number, because the mean of its divisors is an integer number (5050363730956).

Almost surely, 2^{20200111012111} is an apocalyptic number.

20200111012111 is a deficient number, since it is larger than the sum of its proper divisors (1343911713).

20200111012111 is a wasteful number, since it uses less digits than its factorization.

20200111012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343911712.

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

Adding to 20200111012111 its reverse (11121011100202), we get a palindrome (31321122112313).

The spelling of 20200111012111 in words is "twenty trillion, two hundred billion, one hundred eleven million, twelve thousand, one hundred eleven".