221621325260 has 12 divisors (see below), whose sum is σ = 465404783088. Its totient is φ = 88648530096.

The previous prime is 221621325221. The next prime is 221621325269. The reversal of 221621325260 is 62523126122.

221621325260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221621325269) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5540533112 + ... + 5540533151.

It is an arithmetic number, because the mean of its divisors is an integer number (38783731924).

Almost surely, 2^221621325260 is an apocalyptic number.

221621325260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221621325260 is an abundant number, since it is smaller than the sum of its proper divisors (243783457828).

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

221621325260 is a wasteful number, since it uses less digits than its factorization.

221621325260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081066272 (or 11081066270 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 221621325260 in words is "two hundred twenty-one billion, six hundred twenty-one million, three hundred twenty-five thousand, two hundred sixty".