22016434111221 has 16 divisors (see below), whose sum is σ = 32034497725440. Its totient is φ = 13338879415920.

The previous prime is 22016434111207. The next prime is 22016434111237. The reversal of 22016434111221 is 12211143461022.

It is not a de Polignac number, because 22016434111221 - 2³⁰ = 22015360369397 is a prime.

It is a super-2 number, since 2×22016434111221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22016434111291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110248351 + ... + 110447868.

It is an arithmetic number, because the mean of its divisors is an integer number (2002156107840).

Almost surely, 2^{22016434111221} is an apocalyptic number.

It is an amenable number.

22016434111221 is a deficient number, since it is larger than the sum of its proper divisors (10018063614219).

22016434111221 is a wasteful number, since it uses less digits than its factorization.

22016434111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220699256.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 22016434111221 its reverse (12211143461022), we get a palindrome (34227577572243).

The spelling of 22016434111221 in words is "twenty-two trillion, sixteen billion, four hundred thirty-four million, one hundred eleven thousand, two hundred twenty-one".