2021102112111 has 8 divisors (see below), whose sum is σ = 2704000096560. Its totient is φ = 1342802767872.

The previous prime is 2021102112103. The next prime is 2021102112173. The reversal of 2021102112111 is 1112112011202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021102112111 - 2³ = 2021102112103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021102112181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149659026 + ... + 1149660783.

It is an arithmetic number, because the mean of its divisors is an integer number (338000012070).

Almost surely, 2^{2021102112111} is an apocalyptic number.

2021102112111 is a deficient number, since it is larger than the sum of its proper divisors (682897984449).

2021102112111 is a wasteful number, since it uses less digits than its factorization.

2021102112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299320105.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2021102112111 its reverse (1112112011202), we get a palindrome (3133214123313).

The spelling of 2021102112111 in words is "two trillion, twenty-one billion, one hundred two million, one hundred twelve thousand, one hundred eleven".