221822342 has 16 divisors (see below), whose sum is σ = 383823360. Its totient is φ = 94177608.

The previous prime is 221822333. The next prime is 221822383. The reversal of 221822342 is 243228122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72542 + ... + 75537.

It is an arithmetic number, because the mean of its divisors is an integer number (23988960).

Almost surely, 2^221822342 is an apocalyptic number.

221822342 is a deficient number, since it is larger than the sum of its proper divisors (162001018).

221822342 is a wasteful number, since it uses less digits than its factorization.

221822342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148195.

The product of its digits is 3072, while the sum is 26.

The square root of 221822342 is about 14893.7014203992. The cubic root of 221822342 is about 605.3433308421.

The spelling of 221822342 in words is "two hundred twenty-one million, eight hundred twenty-two thousand, three hundred forty-two".