221793970216 has 32 divisors (see below), whose sum is σ = 511832240640. Its totient is φ = 87742669248.

The previous prime is 221793970171. The next prime is 221793970243. The reversal of 221793970216 is 612079397122.

It is a happy number.

221793970216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 221793970216.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 152330296 + ... + 152331751.

It is an arithmetic number, because the mean of its divisors is an integer number (15994757520).

Almost surely, 2^221793970216 is an apocalyptic number.

221793970216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

221793970216 is an abundant number, since it is smaller than the sum of its proper divisors (290038270424).

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

221793970216 is a wasteful number, since it uses less digits than its factorization.

221793970216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304662073 (or 304662069 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 221793970216 in words is "two hundred twenty-one billion, seven hundred ninety-three million, nine hundred seventy thousand, two hundred sixteen".