221655747033356 has 24 divisors (see below), whose sum is σ = 409787273197680. Its totient is φ = 104615784833472.

The previous prime is 221655747033349. The next prime is 221655747033359. The reversal of 221655747033356 is 653330747556122.

It is a junction number, because it is equal to n+sod(n) for n = 221655747033295 and 221655747033304.

It is not an unprimeable number, because it can be changed into a prime (221655747033359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5264460875 + ... + 5264502978.

It is an arithmetic number, because the mean of its divisors is an integer number (17074469716570).

Almost surely, 2^{221655747033356} is an apocalyptic number.

It is an amenable number.

221655747033356 is a deficient number, since it is larger than the sum of its proper divisors (188131526164324).

221655747033356 is a wasteful number, since it uses less digits than its factorization.

221655747033356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10528964153 (or 10528964151 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 59.

The spelling of 221655747033356 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, seven hundred forty-seven million, thirty-three thousand, three hundred fifty-six".