2020121111111 has 16 divisors (see below), whose sum is σ = 2181889958400. Its totient is φ = 1864590079968.

The previous prime is 2020121111093. The next prime is 2020121111119. The reversal of 2020121111111 is 1111111210202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020121111111 is a prime.

2020121111111 is a modest number, since divided by 1111111 gives 202012 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020121111119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298430 + ... + 2032068.

It is an arithmetic number, because the mean of its divisors is an integer number (136368122400).

Almost surely, 2^{2020121111111} is an apocalyptic number.

2020121111111 is a deficient number, since it is larger than the sum of its proper divisors (161768847289).

2020121111111 is a wasteful number, since it uses less digits than its factorization.

2020121111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735438.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2020121111111 its reverse (1111111210202), we get a palindrome (3131232321313).

Subtracting from 2020121111111 its reverse (1111111210202), we obtain a palindrome (909009900909).

The spelling of 2020121111111 in words is "two trillion, twenty billion, one hundred twenty-one million, one hundred eleven thousand, one hundred eleven".