2021222120211 has 24 divisors (see below), whose sum is σ = 3336658251264. Its totient is φ = 1154971050480.

The previous prime is 2021222120209. The next prime is 2021222120249. The reversal of 2021222120211 is 1120212221202.

It is a happy number.

2021222120211 is a `hidden beast` number, since 2 + 0 + 212 + 221 + 20 + 211 = 666.

It is not a de Polignac number, because 2021222120211 - 2¹ = 2021222120209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021222120111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9733510 + ... + 9938996.

It is an arithmetic number, because the mean of its divisors is an integer number (139027427136).

Almost surely, 2^{2021222120211} is an apocalyptic number.

2021222120211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2021222120211 is a deficient number, since it is larger than the sum of its proper divisors (1315436131053).

2021222120211 is a wasteful number, since it uses less digits than its factorization.

2021222120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361631 (or 361628 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021222120211 its reverse (1120212221202), we get a palindrome (3141434341413).

It can be divided in two parts, 20212221202 and 11, that multiplied together give a palindrome (222334433222).

The spelling of 2021222120211 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, two hundred eleven".