211121107 has 2 divisors, whose sum is σ = 211121108. Its totient is φ = 211121106.

The previous prime is 211121089. The next prime is 211121161. The reversal of 211121107 is 701121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121107 - 2¹¹ = 211119059 is a prime.

It is not a weakly prime, because it can be changed into another prime (211121167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560553 + 105560554.

It is an arithmetic number, because the mean of its divisors is an integer number (105560554).

Almost surely, 2^211121107 is an apocalyptic number.

211121107 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121107 is an equidigital number, since it uses as much as digits as its factorization.

211121107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 211121107 is about 14530.0071231916. The cubic root of 211121107 is about 595.4480602190.

Adding to 211121107 its reverse (701121112), we get a palindrome (912242219).

The spelling of 211121107 in words is "two hundred eleven million, one hundred twenty-one thousand, one hundred seven".