221392898853744 has 160 divisors (see below), whose sum is σ = 588004777499904. Its totient is φ = 71727900364800.

The previous prime is 221392898853739. The next prime is 221392898853757. The reversal of 221392898853744 is 447358898293122.

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 31 ways as a sum of consecutive naturals, for example, 7581674344 + ... + 7581703544.

Almost surely, 2^{221392898853744} is an apocalyptic number.

221392898853744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221392898853744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294002388749952).

221392898853744 is an abundant number, since it is smaller than the sum of its proper divisors (366611878646160).

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

221392898853744 is a wasteful number, since it uses less digits than its factorization.

221392898853744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33575 (or 33569 counting only the distinct ones).

The product of its digits is 1672151040, while the sum is 75.

The spelling of 221392898853744 in words is "two hundred twenty-one trillion, three hundred ninety-two billion, eight hundred ninety-eight million, eight hundred fifty-three thousand, seven hundred forty-four".