211216207 has 8 divisors (see below), whose sum is σ = 212352192. Its totient is φ = 210084000.

The previous prime is 211216169. The next prime is 211216231. The reversal of 211216207 is 702612112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211216207 - 2⁷ = 211216079 is a prime.

It is a super-2 number, since 2×211216207² = 89224572198933698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211216277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256857 + ... + 257677.

It is an arithmetic number, because the mean of its divisors is an integer number (26544024).

Almost surely, 2^211216207 is an apocalyptic number.

211216207 is a deficient number, since it is larger than the sum of its proper divisors (1135985).

211216207 is an equidigital number, since it uses as much as digits as its factorization.

211216207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 211216207 is about 14533.2792927130. The cubic root of 211216207 is about 595.5374537916.

Adding to 211216207 its reverse (702612112), we get a palindrome (913828319).

The spelling of 211216207 in words is "two hundred eleven million, two hundred sixteen thousand, two hundred seven".