221306224142 has 8 divisors (see below), whose sum is σ = 333193386600. Its totient is φ = 110241761944.

The previous prime is 221306224129. The next prime is 221306224169. The reversal of 221306224142 is 241422603122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205674392 + ... + 205675467.

It is an arithmetic number, because the mean of its divisors is an integer number (41649173325).

Almost surely, 2^221306224142 is an apocalyptic number.

221306224142 is a deficient number, since it is larger than the sum of its proper divisors (111887162458).

221306224142 is a wasteful number, since it uses less digits than its factorization.

221306224142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411350130.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 221306224142 its reverse (241422603122), we get a palindrome (462728827264).

The spelling of 221306224142 in words is "two hundred twenty-one billion, three hundred six million, two hundred twenty-four thousand, one hundred forty-two".