11021122122011 has 4 divisors (see below), whose sum is σ = 11176349194224. Its totient is φ = 10865895049800.

The previous prime is 11021122121941. The next prime is 11021122122013. The reversal of 11021122122011 is 11022122112011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021122122011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021122122013) 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 in 3 ways as a sum of consecutive naturals, for example, 77613536000 + ... + 77613536141.

It is an arithmetic number, because the mean of its divisors is an integer number (2794087298556).

Almost surely, 2^{11021122122011} is an apocalyptic number.

11021122122011 is a deficient number, since it is larger than the sum of its proper divisors (155227072213).

11021122122011 is an equidigital number, since it uses as much as digits as its factorization.

11021122122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155227072212.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11021122122011 its reverse (11022122112011), we get a palindrome (22043244234022).

The spelling of 11021122122011 in words is "eleven trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, eleven".