211331103233111 has 2 divisors, whose sum is σ = 211331103233112. Its totient is φ = 211331103233110.

The previous prime is 211331103233069. The next prime is 211331103233137. The reversal of 211331103233111 is 111332301133112.

It is an a-pointer prime, because the next prime (211331103233137) can be obtained adding 211331103233111 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211331103233111 - 2¹⁰ = 211331103232087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211331103235111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105665551616555 + 105665551616556.

It is an arithmetic number, because the mean of its divisors is an integer number (105665551616556).

Almost surely, 2^{211331103233111} is an apocalyptic number.

211331103233111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211331103233111 is an equidigital number, since it uses as much as digits as its factorization.

211331103233111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 211331103233111 its reverse (111332301133112), we get a palindrome (322663404366223).

The spelling of 211331103233111 in words is "two hundred eleven trillion, three hundred thirty-one billion, one hundred three million, two hundred thirty-three thousand, one hundred eleven".