2021122222211 has 24 divisors (see below), whose sum is σ = 2218688837904. Its totient is φ = 1839597580800.

The previous prime is 2021122222183. The next prime is 2021122222291. The reversal of 2021122222211 is 1122222211202.

It is not a de Polignac number, because 2021122222211 - 2³⁸ = 1746244315267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021122222291) 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, 449981 + ... + 2060273.

It is an arithmetic number, because the mean of its divisors is an integer number (92445368246).

Almost surely, 2^{2021122222211} is an apocalyptic number.

2021122222211 is a deficient number, since it is larger than the sum of its proper divisors (197566615693).

2021122222211 is a wasteful number, since it uses less digits than its factorization.

2021122222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610471 (or 1610454 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2021122222211 its reverse (1122222211202), we get a palindrome (3143344433413).

It can be divided in two parts, 202 and 1122222211, that multiplied together give a palindrome (226688886622).

The spelling of 2021122222211 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".