11667211 has 2 divisors, whose sum is σ = 11667212. Its totient is φ = 11667210.

The previous prime is 11667209. The next prime is 11667221. The reversal of 11667211 is 11276611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11667211 - 2¹ = 11667209 is a prime.

It is a super-2 number, since 2×11667211² = 272247625037042, which contains 22 as substring.

Together with 11667209, it forms a pair of twin primes.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (11667221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833605 + 5833606.

It is an arithmetic number, because the mean of its divisors is an integer number (5833606).

Almost surely, 2^11667211 is an apocalyptic number.

11667211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11667211 is an equidigital number, since it uses as much as digits as its factorization.

11667211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 11667211 is about 3415.7299366314. The cubic root of 11667211 is about 226.8065978047.

The spelling of 11667211 in words is "eleven million, six hundred sixty-seven thousand, two hundred eleven".