211110142301221 has 2 divisors, whose sum is σ = 211110142301222. Its totient is φ = 211110142301220.

The previous prime is 211110142301197. The next prime is 211110142301257. The reversal of 211110142301221 is 122103241011112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199826891808196 + 11283250493025 = 14136014^2 + 3359055^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110142301221 - 2²⁹ = 211109605430309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211110142301192 and 211110142301201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211110142301281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555071150610 + 105555071150611.

It is an arithmetic number, because the mean of its divisors is an integer number (105555071150611).

Almost surely, 2^{211110142301221} is an apocalyptic number.

It is an amenable number.

211110142301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110142301221 is an equidigital number, since it uses as much as digits as its factorization.

211110142301221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 211110142301221 its reverse (122103241011112), we get a palindrome (333213383312333).

The spelling of 211110142301221 in words is "two hundred eleven trillion, one hundred ten billion, one hundred forty-two million, three hundred one thousand, two hundred twenty-one".