221166067080 has 256 divisors, whose sum is σ = 832898764800. Its totient is φ = 45809280000.

The previous prime is 221166067063. The next prime is 221166067081. The reversal of 221166067080 is 80760661122.

It is not an unprimeable number, because it can be changed into a prime (221166067081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65830 + ... + 668330.

It is an arithmetic number, because the mean of its divisors is an integer number (3253510800).

Almost surely, 2^221166067080 is an apocalyptic number.

221166067080 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 221166067080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416449382400).

221166067080 is an abundant number, since it is smaller than the sum of its proper divisors (611732697720).

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

221166067080 is a wasteful number, since it uses less digits than its factorization.

221166067080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602564 (or 602560 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 221166067080 in words is "two hundred twenty-one billion, one hundred sixty-six million, sixty-seven thousand, eighty".