211110120121213 has 2 divisors, whose sum is σ = 211110120121214. Its totient is φ = 211110120121212.

The previous prime is 211110120121177. The next prime is 211110120121247. The reversal of 211110120121213 is 312121021011112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196933705356249 + 14176414764964 = 14033307^2 + 3765158^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110120121213 - 2¹⁷ = 211110119990141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211110121121213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555060060606 + 105555060060607.

It is an arithmetic number, because the mean of its divisors is an integer number (105555060060607).

Almost surely, 2^{211110120121213} is an apocalyptic number.

It is an amenable number.

211110120121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110120121213 is an equidigital number, since it uses as much as digits as its factorization.

211110120121213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 211110120121213 its reverse (312121021011112), we get a palindrome (523231141132325).

The spelling of 211110120121213 in words is "two hundred eleven trillion, one hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred thirteen".