2021122222291 has 2 divisors, whose sum is σ = 2021122222292. Its totient is φ = 2021122222290.

The previous prime is 2021122222183. The next prime is 2021122222337. The reversal of 2021122222291 is 1922222211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021122222291 - 2¹⁹ = 2021121698003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021122222991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010561111145 + 1010561111146.

It is an arithmetic number, because the mean of its divisors is an integer number (1010561111146).

Almost surely, 2^{2021122222291} is an apocalyptic number.

2021122222291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021122222291 is an equidigital number, since it uses as much as digits as its factorization.

2021122222291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 2021122222291 its reverse (1922222211202), we get a palindrome (3943344433493).

The spelling of 2021122222291 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ninety-one".