1001211022211 has 2 divisors, whose sum is σ = 1001211022212. Its totient is φ = 1001211022210.

The previous prime is 1001211022169. The next prime is 1001211022213. The reversal of 1001211022211 is 1122201121001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001211022211 is a prime.

Together with 1001211022213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1001211022213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605511105 + 500605511106.

It is an arithmetic number, because the mean of its divisors is an integer number (500605511106).

Almost surely, 2^{1001211022211} is an apocalyptic number.

1001211022211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001211022211 is an equidigital number, since it uses as much as digits as its factorization.

1001211022211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001211022211 its reverse (1122201121001), we get a palindrome (2123412143212).

The spelling of 1001211022211 in words is "one trillion, one billion, two hundred eleven million, twenty-two thousand, two hundred eleven".