221300303956 has 12 divisors (see below), whose sum is σ = 400629860820. Its totient is φ = 106834629440.

The previous prime is 221300303909. The next prime is 221300303957. The reversal of 221300303956 is 659303003122.

221300303956 is digitally balanced in base 3, 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 142933900356 + 78366403600 = 378066^2 + 279940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300303957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953880505 + ... + 953880736.

It is an arithmetic number, because the mean of its divisors is an integer number (33385821735).

Almost surely, 2^221300303956 is an apocalyptic number.

It is an amenable number.

221300303956 is a deficient number, since it is larger than the sum of its proper divisors (179329556864).

221300303956 is a wasteful number, since it uses less digits than its factorization.

221300303956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907761274 (or 1907761272 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 34.

The spelling of 221300303956 in words is "two hundred twenty-one billion, three hundred million, three hundred three thousand, nine hundred fifty-six".