221552015040 has 84 divisors (see below), whose sum is σ = 762046628304. Its totient is φ = 59080536576.

The previous prime is 221552015029. The next prime is 221552015051. The reversal of 221552015040 is 40510255122.

221552015040 is a `hidden beast` number, since 2 + 2 + 155 + 2 + 0 + 1 + 504 + 0 = 666.

221552015040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221552015029) and next prime (221552015051).

It is a junction number, because it is equal to n+sod(n) for n = 221552014995 and 221552015013.

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 11 ways as a sum of consecutive naturals, for example, 38461012 + ... + 38466771.

Almost surely, 2^221552015040 is an apocalyptic number.

221552015040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221552015040 is an abundant number, since it is smaller than the sum of its proper divisors (540494613264).

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

221552015040 is a wasteful number, since it uses less digits than its factorization.

221552015040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76927806 (or 76927793 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 221552015040 in words is "two hundred twenty-one billion, five hundred fifty-two million, fifteen thousand, forty".