216222435444556 has 24 divisors (see below), whose sum is σ = 379833312618144. Its totient is φ = 107698643329920.

The previous prime is 216222435444551. The next prime is 216222435444571. The reversal of 216222435444556 is 655444534222612.

It is a junction number, because it is equal to n+sod(n) for n = 216222435444497 and 216222435444506.

It is not an unprimeable number, because it can be changed into a prime (216222435444551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75852046 + ... + 78650986.

It is an arithmetic number, because the mean of its divisors is an integer number (15826388025756).

Almost surely, 2^{216222435444556} is an apocalyptic number.

It is an amenable number.

216222435444556 is a deficient number, since it is larger than the sum of its proper divisors (163610877173588).

216222435444556 is a wasteful number, since it uses less digits than its factorization.

216222435444556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872641 (or 2872639 counting only the distinct ones).

The product of its digits is 55296000, while the sum is 55.

The spelling of 216222435444556 in words is "two hundred sixteen trillion, two hundred twenty-two billion, four hundred thirty-five million, four hundred forty-four thousand, five hundred fifty-six".