11221101197 has 2 divisors, whose sum is σ = 11221101198. Its totient is φ = 11221101196.

The previous prime is 11221101179. The next prime is 11221101257. The reversal of 11221101197 is 79110112211.

11221101197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (11221101179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9708357961 + 1512743236 = 98531^2 + 38894^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221101197 - 2³² = 6926133901 is a prime.

It is a super-2 number, since 2×11221101197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221101137) 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 as a sum of consecutive naturals, namely, 5610550598 + 5610550599.

It is an arithmetic number, because the mean of its divisors is an integer number (5610550599).

Almost surely, 2^11221101197 is an apocalyptic number.

It is an amenable number.

11221101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221101197 is an equidigital number, since it uses as much as digits as its factorization.

11221101197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 26.

The spelling of 11221101197 in words is "eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred ninety-seven".