221054522364156 has 48 divisors (see below), whose sum is σ = 555471391258784. Its totient is φ = 68016647172096.

The previous prime is 221054522364119. The next prime is 221054522364157. The reversal of 221054522364156 is 651463225450122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221054522364157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111502296 + ... + 113467488.

Almost surely, 2^{221054522364156} is an apocalyptic number.

221054522364156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

221054522364156 is an abundant number, since it is smaller than the sum of its proper divisors (334416868894628).

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

221054522364156 is a wasteful number, since it uses less digits than its factorization.

221054522364156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686270 (or 2686268 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 221054522364156 in words is "two hundred twenty-one trillion, fifty-four billion, five hundred twenty-two million, three hundred sixty-four thousand, one hundred fifty-six".