221054155544 has 16 divisors (see below), whose sum is σ = 414682676520. Its totient is φ = 110472108480.

The previous prime is 221054155507. The next prime is 221054155559. The reversal of 221054155544 is 445551450122.

221054155544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221054155498 and 221054155507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6854069 + ... + 6886244.

Almost surely, 2^221054155544 is an apocalyptic number.

It is an amenable number.

221054155544 is a deficient number, since it is larger than the sum of its proper divisors (193628520976).

221054155544 is a wasteful number, since it uses less digits than its factorization.

221054155544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742330 (or 13742326 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 221054155544 in words is "two hundred twenty-one billion, fifty-four million, one hundred fifty-five thousand, five hundred forty-four".