2021222011 has 2 divisors, whose sum is σ = 2021222012. Its totient is φ = 2021222010.

The previous prime is 2021221973. The next prime is 2021222017. The reversal of 2021222011 is 1102221202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021222011 - 2¹³ = 2021213819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021221982 and 2021222000.

It is not a weakly prime, because it can be changed into another prime (2021222017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010611005 + 1010611006.

It is an arithmetic number, because the mean of its divisors is an integer number (1010611006).

Almost surely, 2^2021222011 is an apocalyptic number.

2021222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021222011 is an equidigital number, since it uses as much as digits as its factorization.

2021222011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2021222011 is about 44958.0027470082. The cubic root of 2021222011 is about 1264.3617231300.

Adding to 2021222011 its reverse (1102221202), we get a palindrome (3123443213).

The spelling of 2021222011 in words is "two billion, twenty-one million, two hundred twenty-two thousand, eleven".