2021222111211 has 64 divisors (see below), whose sum is σ = 3123316247040. Its totient is φ = 1290926851200.

The previous prime is 2021222111171. The next prime is 2021222111213. The reversal of 2021222111211 is 1121112221202.

2021222111211 is a `hidden beast` number, since 20 + 212 + 221 + 1 + 1 + 211 = 666.

It is not a de Polignac number, because 2021222111211 - 2²⁷ = 2021087893483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021222111213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12466381 + ... + 12627473.

It is an arithmetic number, because the mean of its divisors is an integer number (48801816360).

Almost surely, 2^{2021222111211} is an apocalyptic number.

2021222111211 is a deficient number, since it is larger than the sum of its proper divisors (1102094135829).

2021222111211 is a wasteful number, since it uses less digits than its factorization.

2021222111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161353 (or 161347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2021222111211 its reverse (1121112221202), we get a palindrome (3142334332413).

The spelling of 2021222111211 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred eleven".