21220200001111 has 8 divisors (see below), whose sum is σ = 21905318851200. Its totient is φ = 20535118417920.

The previous prime is 21220200001097. The next prime is 21220200001129. The reversal of 21220200001111 is 11110000202212.

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

It is a cyclic number.

It is not a de Polignac number, because 21220200001111 - 2⁹ = 21220200000599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21220200001091 and 21220200001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220200001151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8157226 + ... + 10439383.

It is an arithmetic number, because the mean of its divisors is an integer number (2738164856400).

Almost surely, 2^{21220200001111} is an apocalyptic number.

21220200001111 is a deficient number, since it is larger than the sum of its proper divisors (685118850089).

21220200001111 is a wasteful number, since it uses less digits than its factorization.

21220200001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18633449.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21220200001111 its reverse (11110000202212), we get a palindrome (32330200203323).

The spelling of 21220200001111 in words is "twenty-one trillion, two hundred twenty billion, two hundred million, one thousand, one hundred eleven".