211210111101211 has 2 divisors, whose sum is σ = 211210111101212. Its totient is φ = 211210111101210.

The previous prime is 211210111101169. The next prime is 211210111101221. The reversal of 211210111101211 is 112101111012112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211210111101211 - 2¹³ = 211210111093019 is a prime.

It is a super-2 number, since 2×211210111101211² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211210111101221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605055550605 + 105605055550606.

It is an arithmetic number, because the mean of its divisors is an integer number (105605055550606).

Almost surely, 2^{211210111101211} is an apocalyptic number.

211210111101211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210111101211 is an equidigital number, since it uses as much as digits as its factorization.

211210111101211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 211210111101211 its reverse (112101111012112), we get a palindrome (323311222113323).

It can be divided in two parts, 21121011 and 1101211, that added together give a palindrome (22222222).

The spelling of 211210111101211 in words is "two hundred eleven trillion, two hundred ten billion, one hundred eleven million, one hundred one thousand, two hundred eleven".