221534451744562 has 16 divisors (see below), whose sum is σ = 362598505365600. Its totient is φ = 100673149085440.

The previous prime is 221534451744559. The next prime is 221534451744569. The reversal of 221534451744562 is 265447154435122.

It is not an unprimeable number, because it can be changed into a prime (221534451744569) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1216355887 + ... + 1216538002.

It is an arithmetic number, because the mean of its divisors is an integer number (22662406585350).

Almost surely, 2^{221534451744562} is an apocalyptic number.

221534451744562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221534451744562 is a deficient number, since it is larger than the sum of its proper divisors (141064053621038).

221534451744562 is a wasteful number, since it uses less digits than its factorization.

221534451744562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432898041.

The product of its digits is 32256000, while the sum is 55.

The spelling of 221534451744562 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-one million, seven hundred forty-four thousand, five hundred sixty-two".