2021212023111 has 12 divisors (see below), whose sum is σ = 2933365108440. Its totient is φ = 1341088544880.

The previous prime is 2021212023073. The next prime is 2021212023199. The reversal of 2021212023111 is 1113202121202.

2021212023111 is a `hidden beast` number, since 20 + 212 + 120 + 2 + 311 + 1 = 666.

It is not a de Polignac number, because 2021212023111 - 2²⁶ = 2021144914247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021212023511) 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, 532176096 + ... + 532179893.

It is an arithmetic number, because the mean of its divisors is an integer number (244447092370).

Almost surely, 2^{2021212023111} is an apocalyptic number.

2021212023111 is a deficient number, since it is larger than the sum of its proper divisors (912153085329).

2021212023111 is a wasteful number, since it uses less digits than its factorization.

2021212023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064356206 (or 1064356203 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021212023111 its reverse (1113202121202), we get a palindrome (3134414144313).

The spelling of 2021212023111 in words is "two trillion, twenty-one billion, two hundred twelve million, twenty-three thousand, one hundred eleven".