221064063072 has 96 divisors (see below), whose sum is σ = 646766467200. Its totient is φ = 65703241728.

The previous prime is 221064063071. The next prime is 221064063109. The reversal of 221064063072 is 270360460122.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221064063071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3533622 + ... + 3595637.

It is an arithmetic number, because the mean of its divisors is an integer number (6737150700).

Almost surely, 2^221064063072 is an apocalyptic number.

It is an amenable number.

221064063072 is an abundant number, since it is smaller than the sum of its proper divisors (425702404128).

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

221064063072 is a wasteful number, since it uses less digits than its factorization.

221064063072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129308 (or 7129300 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 221064063072 in words is "two hundred twenty-one billion, sixty-four million, sixty-three thousand, seventy-two".