221200342 has 48 divisors (see below), whose sum is σ = 386583120. Its totient is φ = 94691520.

The previous prime is 221200303. The next prime is 221200367. The reversal of 221200342 is 243002122.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 301408 + ... + 302140.

It is an arithmetic number, because the mean of its divisors is an integer number (8053815).

Almost surely, 2^221200342 is an apocalyptic number.

221200342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221200342 is a deficient number, since it is larger than the sum of its proper divisors (165382778).

221200342 is a wasteful number, since it uses less digits than its factorization.

221200342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 221200342 is about 14872.8054515616. The cubic root of 221200342 is about 604.7769977015.

Adding to 221200342 its reverse (243002122), we get a palindrome (464202464).

The spelling of 221200342 in words is "two hundred twenty-one million, two hundred thousand, three hundred forty-two".