211120121211001 has 2 divisors, whose sum is σ = 211120121211002. Its totient is φ = 211120121211000.

The previous prime is 211120121210989. The next prime is 211120121211047. The reversal of 211120121211001 is 100112121021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166664898335376 + 44455222875625 = 12909876^2 + 6667475^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120121211001 - 2⁵ = 211120121210969 is a prime.

It is not a weakly prime, because it can be changed into another prime (211120121211071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560060605500 + 105560060605501.

It is an arithmetic number, because the mean of its divisors is an integer number (105560060605501).

Almost surely, 2^{211120121211001} is an apocalyptic number.

It is an amenable number.

211120121211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120121211001 is an equidigital number, since it uses as much as digits as its factorization.

211120121211001 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 16.

Adding to 211120121211001 its reverse (100112121021112), we get a palindrome (311232242232113).

The spelling of 211120121211001 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, one".