221966847000 has 192 divisors, whose sum is σ = 750724228800. Its totient is φ = 59153587200.

The previous prime is 221966846977. The next prime is 221966847043. The reversal of 221966847000 is 748669122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15986061 + ... + 15999939.

It is an arithmetic number, because the mean of its divisors is an integer number (3910022025).

Almost surely, 2^221966847000 is an apocalyptic number.

221966847000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221966847000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375362114400).

221966847000 is an abundant number, since it is smaller than the sum of its proper divisors (528757381800).

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

221966847000 is a wasteful number, since it uses less digits than its factorization.

221966847000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683 (or 15666 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 221966847000 in words is "two hundred twenty-one billion, nine hundred sixty-six million, eight hundred forty-seven thousand".