211332121211 has 2 divisors, whose sum is σ = 211332121212. Its totient is φ = 211332121210.

The previous prime is 211332121207. The next prime is 211332121241. The reversal of 211332121211 is 112121233112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211332121211 - 2² = 211332121207 is a prime.

It is a super-2 number, since 2×211332121211² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (211332121241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105666060605 + 105666060606.

It is an arithmetic number, because the mean of its divisors is an integer number (105666060606).

Almost surely, 2^211332121211 is an apocalyptic number.

211332121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211332121211 is an equidigital number, since it uses as much as digits as its factorization.

211332121211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

Adding to 211332121211 its reverse (112121233112), we get a palindrome (323453354323).

The spelling of 211332121211 in words is "two hundred eleven billion, three hundred thirty-two million, one hundred twenty-one thousand, two hundred eleven".