11022122012021 has 4 divisors (see below), whose sum is σ = 11024621930700. Its totient is φ = 11019622093344.

The previous prime is 11022122011937. The next prime is 11022122012059. The reversal of 11022122012021 is 12021022122011.

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 334649523121 + 10687472488900 = 578489^2 + 3269170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11022122012021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022122012081) 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, 1249952726 + ... + 1249961543.

It is an arithmetic number, because the mean of its divisors is an integer number (2756155482675).

Almost surely, 2^{11022122012021} is an apocalyptic number.

It is an amenable number.

11022122012021 is a deficient number, since it is larger than the sum of its proper divisors (2499918679).

11022122012021 is an equidigital number, since it uses as much as digits as its factorization.

11022122012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499918678.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11022122012021 its reverse (12021022122011), we get a palindrome (23043144134032).

The spelling of 11022122012021 in words is "eleven trillion, twenty-two billion, one hundred twenty-two million, twelve thousand, twenty-one".