20012220222011 has 2 divisors, whose sum is σ = 20012220222012. Its totient is φ = 20012220222010.

The previous prime is 20012220221951. The next prime is 20012220222017. The reversal of 20012220222011 is 11022202221002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012220222011 - 2¹⁸ = 20012219959867 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012220222017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006110111005 + 10006110111006.

It is an arithmetic number, because the mean of its divisors is an integer number (10006110111006).

Almost surely, 2^{20012220222011} is an apocalyptic number.

20012220222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012220222011 is an equidigital number, since it uses as much as digits as its factorization.

20012220222011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20012220222011 its reverse (11022202221002), we get a palindrome (31034422443013).

The spelling of 20012220222011 in words is "twenty trillion, twelve billion, two hundred twenty million, two hundred twenty-two thousand, eleven".