221770900086 has 64 divisors (see below), whose sum is σ = 455680423872. Its totient is φ = 71928000000.

The previous prime is 221770900073. The next prime is 221770900097. The reversal of 221770900086 is 680009077122.

221770900086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 59920036 + ... + 59923736.

It is an arithmetic number, because the mean of its divisors is an integer number (7120006623).

Almost surely, 2^221770900086 is an apocalyptic number.

221770900086 is an abundant number, since it is smaller than the sum of its proper divisors (233909523786).

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

221770900086 is a wasteful number, since it uses less digits than its factorization.

221770900086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 221770900086 in words is "two hundred twenty-one billion, seven hundred seventy million, nine hundred thousand, eighty-six".