211120000121 has 2 divisors, whose sum is σ = 211120000122. Its totient is φ = 211120000120.

The previous prime is 211120000111. The next prime is 211120000141. The reversal of 211120000121 is 121000021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188191983721 + 22928016400 = 433811^2 + 151420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211120000121 is a prime.

It is not a weakly prime, because it can be changed into another prime (211120000111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560000060 + 105560000061.

It is an arithmetic number, because the mean of its divisors is an integer number (105560000061).

Almost surely, 2^211120000121 is an apocalyptic number.

It is an amenable number.

211120000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120000121 is an equidigital number, since it uses as much as digits as its factorization.

211120000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211120000121 its reverse (121000021112), we get a palindrome (332120021233).

The spelling of 211120000121 in words is "two hundred eleven billion, one hundred twenty million, one hundred twenty-one", and thus it is an aban number.