211112010110381 has 2 divisors, whose sum is σ = 211112010110382. Its totient is φ = 211112010110380.

The previous prime is 211112010110311. The next prime is 211112010110411. The reversal of 211112010110381 is 183011010211112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189693903789481 + 21418106320900 = 13772941^2 + 4627970^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112010110381 - 2¹⁸ = 211112009848237 is a prime.

It is a super-2 number, since 2×211112010110381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211112010110311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556005055190 + 105556005055191.

It is an arithmetic number, because the mean of its divisors is an integer number (105556005055191).

Almost surely, 2^{211112010110381} is an apocalyptic number.

It is an amenable number.

211112010110381 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112010110381 is an equidigital number, since it uses as much as digits as its factorization.

211112010110381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 23.

Adding to 211112010110381 its reverse (183011010211112), we get a palindrome (394123020321493).

The spelling of 211112010110381 in words is "two hundred eleven trillion, one hundred twelve billion, ten million, one hundred ten thousand, three hundred eighty-one".