2021110212311 has 32 divisors (see below), whose sum is σ = 2164468331520. Its totient is φ = 1882652454144.

The previous prime is 2021110212307. The next prime is 2021110212337. The reversal of 2021110212311 is 1132120111202.

It is a happy number.

It is not a de Polignac number, because 2021110212311 - 2² = 2021110212307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021110212311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021110212211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834134246 + ... + 834136668.

It is an arithmetic number, because the mean of its divisors is an integer number (67639635360).

Almost surely, 2^{2021110212311} is an apocalyptic number.

2021110212311 is a deficient number, since it is larger than the sum of its proper divisors (143358119209).

2021110212311 is a wasteful number, since it uses less digits than its factorization.

2021110212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2021110212311 its reverse (1132120111202), we get a palindrome (3153230323513).

The spelling of 2021110212311 in words is "two trillion, twenty-one billion, one hundred ten million, two hundred twelve thousand, three hundred eleven".