216621716022 has 12 divisors (see below), whose sum is σ = 469347051420. Its totient is φ = 72207238668.

The previous prime is 216621716009. The next prime is 216621716027. The reversal of 216621716022 is 220617126612.

It is a happy number.

216621716022 is a `hidden beast` number, since 2 + 1 + 6 + 621 + 7 + 1 + 6 + 0 + 22 = 666.

216621716022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216621716027) 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 5 ways as a sum of consecutive naturals, for example, 6017269872 + ... + 6017269907.

It is an arithmetic number, because the mean of its divisors is an integer number (39112254285).

Almost surely, 2^216621716022 is an apocalyptic number.

216621716022 is an abundant number, since it is smaller than the sum of its proper divisors (252725335398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216621716022 is a wasteful number, since it uses less digits than its factorization.

216621716022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12034539787 (or 12034539784 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 216621716022 in words is "two hundred sixteen billion, six hundred twenty-one million, seven hundred sixteen thousand, twenty-two".