11212122201178 has 8 divisors (see below), whose sum is σ = 16841904295860. Its totient is φ = 5598154102560.

The previous prime is 11212122201169. The next prime is 11212122201179. The reversal of 11212122201178 is 87110222121211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11205267520329 + 6854680849 = 3347427^2 + 82793^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11212122201179) 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, 3953497243 + ... + 3953500078.

Almost surely, 2^{11212122201178} is an apocalyptic number.

11212122201178 is a deficient number, since it is larger than the sum of its proper divisors (5629782094682).

11212122201178 is an equidigital number, since it uses as much as digits as its factorization.

11212122201178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906998032.

The product of its (nonzero) digits is 1792, while the sum is 31.

Adding to 11212122201178 its reverse (87110222121211), we get a palindrome (98322344322389).

The spelling of 11212122201178 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, two hundred one thousand, one hundred seventy-eight".