211110101142121 has 2 divisors, whose sum is σ = 211110101142122. Its totient is φ = 211110101142120.

The previous prime is 211110101142103. The next prime is 211110101142173. The reversal of 211110101142121 is 121241101011112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205825964516496 + 5284136625625 = 14346636^2 + 2298725^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110101142121 - 2²⁵ = 211110067587689 is a prime.

It is not a weakly prime, because it can be changed into another prime (211110101142221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555050571060 + 105555050571061.

It is an arithmetic number, because the mean of its divisors is an integer number (105555050571061).

Almost surely, 2^{211110101142121} is an apocalyptic number.

It is an amenable number.

211110101142121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110101142121 is an equidigital number, since it uses as much as digits as its factorization.

211110101142121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211110101142121 its reverse (121241101011112), we get a palindrome (332351202153233).

The spelling of 211110101142121 in words is "two hundred eleven trillion, one hundred ten billion, one hundred one million, one hundred forty-two thousand, one hundred twenty-one".