20200021102111 has 4 divisors (see below), whose sum is σ = 20311623428824. Its totient is φ = 20088418775400.

The previous prime is 20200021102067. The next prime is 20200021102169. The reversal of 20200021102111 is 11120112000202.

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 20200021102111 - 2⁷ = 20200021101983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200021102091 and 20200021102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200021102411) 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, 55801163085 + ... + 55801163446.

It is an arithmetic number, because the mean of its divisors is an integer number (5077905857206).

Almost surely, 2^{20200021102111} is an apocalyptic number.

20200021102111 is a deficient number, since it is larger than the sum of its proper divisors (111602326713).

20200021102111 is a wasteful number, since it uses less digits than its factorization.

20200021102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111602326712.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20200021102111 its reverse (11120112000202), we get a palindrome (31320133102313).

The spelling of 20200021102111 in words is "twenty trillion, two hundred billion, twenty-one million, one hundred two thousand, one hundred eleven".