221398957214 has 16 divisors (see below), whose sum is σ = 346940979840. Its totient is φ = 105763171800.

The previous prime is 221398957201. The next prime is 221398957267. The reversal of 221398957214 is 412759893122.

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 7 ways as a sum of consecutive naturals, for example, 2762012 + ... + 2841039.

It is an arithmetic number, because the mean of its divisors is an integer number (21683811240).

Almost surely, 2^221398957214 is an apocalyptic number.

221398957214 is a deficient number, since it is larger than the sum of its proper divisors (125542022626).

221398957214 is a wasteful number, since it uses less digits than its factorization.

221398957214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603935.

The product of its digits is 2177280, while the sum is 53.

The spelling of 221398957214 in words is "two hundred twenty-one billion, three hundred ninety-eight million, nine hundred fifty-seven thousand, two hundred fourteen".