2001022222211 has 2 divisors, whose sum is σ = 2001022222212. Its totient is φ = 2001022222210.

The previous prime is 2001022222187. The next prime is 2001022222217. The reversal of 2001022222211 is 1122222201002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001022222211 - 2³⁸ = 1726144315267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001022222211.

It is not a weakly prime, because it can be changed into another prime (2001022222217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000511111105 + 1000511111106.

It is an arithmetic number, because the mean of its divisors is an integer number (1000511111106).

Almost surely, 2^{2001022222211} is an apocalyptic number.

2001022222211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001022222211 is an equidigital number, since it uses as much as digits as its factorization.

2001022222211 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 2001022222211 its reverse (1122222201002), we get a palindrome (3123244423213).

The spelling of 2001022222211 in words is "two trillion, one billion, twenty-two million, two hundred twenty-two thousand, two hundred eleven".