11212122193 has 4 divisors (see below), whose sum is σ = 11223888228. Its totient is φ = 11200356160.

The previous prime is 11212122151. The next prime is 11212122199. The reversal of 11212122193 is 39122121211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2997781504 + 8214340689 = 54752^2 + 90633^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212122193 - 2⁹ = 11212121681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212122199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5881588 + ... + 5883493.

It is an arithmetic number, because the mean of its divisors is an integer number (2805972057).

Almost surely, 2^11212122193 is an apocalyptic number.

It is an amenable number.

11212122193 is a deficient number, since it is larger than the sum of its proper divisors (11766035).

11212122193 is an equidigital number, since it uses as much as digits as its factorization.

11212122193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11766034.

The product of its digits is 432, while the sum is 25.

The spelling of 11212122193 in words is "eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred ninety-three".