2020101211111 has 4 divisors (see below), whose sum is σ = 2020346466552. Its totient is φ = 2019855955672.

The previous prime is 2020101211099. The next prime is 2020101211129. The reversal of 2020101211111 is 1111121010202.

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 2020101211111 - 2²⁵ = 2020067656679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020101211091 and 2020101211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020101211171) 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, 122615365 + ... + 122631838.

It is an arithmetic number, because the mean of its divisors is an integer number (505086616638).

Almost surely, 2^{2020101211111} is an apocalyptic number.

2020101211111 is a deficient number, since it is larger than the sum of its proper divisors (245255441).

2020101211111 is an equidigital number, since it uses as much as digits as its factorization.

2020101211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245255440.

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

Adding to 2020101211111 its reverse (1111121010202), we get a palindrome (3131222221313).

The spelling of 2020101211111 in words is "two trillion, twenty billion, one hundred one million, two hundred eleven thousand, one hundred eleven".