11211097 has 6 divisors (see below), whose sum is σ = 11720282. Its totient is φ = 10723152.

The previous prime is 11211091. The next prime is 11211103. The reversal of 11211097 is 79011211.

11211097 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11211091) and next prime (11211103).

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 4575321 = 2576^2 + 2139^2 .

It is not a de Polignac number, because 11211097 - 2¹¹ = 11209049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10068 + ... + 11125.

Almost surely, 2^11211097 is an apocalyptic number.

It is an amenable number.

11211097 is a deficient number, since it is larger than the sum of its proper divisors (509185).

11211097 is an equidigital number, since it uses as much as digits as its factorization.

11211097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21239 (or 21216 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 11211097 is about 3348.2976271532. The cubic root of 11211097 is about 223.8116574250.

The spelling of 11211097 in words is "eleven million, two hundred eleven thousand, ninety-seven".