20020100011111 has 12 divisors (see below), whose sum is σ = 21316231354752. Its totient is φ = 18798566157504.

The previous prime is 20020100011099. The next prime is 20020100011133. The reversal of 20020100011111 is 11111000102002.

It is not a de Polignac number, because 20020100011111 - 2²⁷ = 20019965793383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020100011711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245345671 + ... + 245427256.

It is an arithmetic number, because the mean of its divisors is an integer number (1776352612896).

Almost surely, 2^{20020100011111} is an apocalyptic number.

20020100011111 is a deficient number, since it is larger than the sum of its proper divisors (1296131343641).

20020100011111 is a wasteful number, since it uses less digits than its factorization.

20020100011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490773078 (or 490773059 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20020100011111 its reverse (11111000102002), we get a palindrome (31131100113113).

The spelling of 20020100011111 in words is "twenty trillion, twenty billion, one hundred million, eleven thousand, one hundred eleven".