221554255132 has 12 divisors (see below), whose sum is σ = 443108510320. Its totient is φ = 94951823616.

The previous prime is 221554255121. The next prime is 221554255141. The reversal of 221554255132 is 231552455122.

221554255132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

221554255132 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221554255091 and 221554255100.

It is a congruent number.

It is an unprimeable number.

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, 3956325957 + ... + 3956326012.

Almost surely, 2^221554255132 is an apocalyptic number.

It is an amenable number.

221554255132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221554255132 is a wasteful number, since it uses less digits than its factorization.

221554255132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912651980 (or 7912651978 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The spelling of 221554255132 in words is "two hundred twenty-one billion, five hundred fifty-four million, two hundred fifty-five thousand, one hundred thirty-two".