11021120022221 has 16 divisors (see below), whose sum is σ = 11165561510400. Its totient is φ = 10877520547008.

The previous prime is 11021120022191. The next prime is 11021120022229. The reversal of 11021120022221 is 12222002112011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021120022221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11021120022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021120022229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31242695 + ... + 31593483.

It is an arithmetic number, because the mean of its divisors is an integer number (697847594400).

Almost surely, 2^{11021120022221} is an apocalyptic number.

It is an amenable number.

11021120022221 is a deficient number, since it is larger than the sum of its proper divisors (144441488179).

11021120022221 is a wasteful number, since it uses less digits than its factorization.

11021120022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351988.

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

Adding to 11021120022221 its reverse (12222002112011), we get a palindrome (23243122134232).

The spelling of 11021120022221 in words is "eleven trillion, twenty-one billion, one hundred twenty million, twenty-two thousand, two hundred twenty-one".