221080581152 has 54 divisors (see below), whose sum is σ = 445840588557. Its totient is φ = 107913730176.

The previous prime is 221080581143. The next prime is 221080581157. The reversal of 221080581152 is 251185080122.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 213595562896 + 7485018256 = 462164^2 + 86516^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332476.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221080581157) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 114370778 + ... + 114372710.

Almost surely, 2^221080581152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221080581152

221080581152 is an abundant number, since it is smaller than the sum of its proper divisors (224760007405).

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

221080581152 is an frugal number, since it uses more digits than its factorization.

221080581152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 35.

The spelling of 221080581152 in words is "two hundred twenty-one billion, eighty million, five hundred eighty-one thousand, one hundred fifty-two".