2021222211211 has 8 divisors (see below), whose sum is σ = 2324681416160. Its totient is φ = 1721441299968.

The previous prime is 2021222211187. The next prime is 2021222211293. The reversal of 2021222211211 is 1121122221202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021222211211 - 2¹⁹ = 2021221686923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021222211511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919572246 + ... + 919574443.

It is an arithmetic number, because the mean of its divisors is an integer number (290585177020).

Almost surely, 2^{2021222211211} is an apocalyptic number.

2021222211211 is a deficient number, since it is larger than the sum of its proper divisors (303459204949).

2021222211211 is a wasteful number, since it uses less digits than its factorization.

2021222211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839146853.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2021222211211 its reverse (1121122221202), we get a palindrome (3142344432413).

Subtracting from 2021222211211 its reverse (1121122221202), we obtain a palindrome (900099990009).

The spelling of 2021222211211 in words is "two trillion, twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred eleven".