221077921352 has 12 divisors (see below), whose sum is σ = 414523596105. Its totient is φ = 110538295728.

The previous prime is 221077921327. The next prime is 221077921357. The reversal of 221077921352 is 253129770122.

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.

221077921352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 143054907076 + 78023014276 = 378226^2 + 279326^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332474.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221077921357) 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 2 ways as a sum of consecutive naturals, for example, 1246778 + ... + 1413014.

Almost surely, 2^221077921352 is an apocalyptic number.

It is an amenable number.

221077921352 is a deficient number, since it is larger than the sum of its proper divisors (193445674753).

221077921352 is an frugal number, since it uses more digits than its factorization.

221077921352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332480 (or 166239 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 221077921352 in words is "two hundred twenty-one billion, seventy-seven million, nine hundred twenty-one thousand, three hundred fifty-two".