221974514 has 16 divisors (see below), whose sum is σ = 347960448. Its totient is φ = 106097712.

The previous prime is 221974513. The next prime is 221974517. The reversal of 221974514 is 415479122.

It is not an unprimeable number, because it can be changed into a prime (221974513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23417 + ... + 31500.

It is an arithmetic number, because the mean of its divisors is an integer number (21747528).

Almost surely, 2^221974514 is an apocalyptic number.

221974514 is a deficient number, since it is larger than the sum of its proper divisors (125985934).

221974514 is a wasteful number, since it uses less digits than its factorization.

221974514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55009.

The product of its digits is 20160, while the sum is 35.

The square root of 221974514 is about 14898.8091470426. The cubic root of 221974514 is about 605.4817227467.

The spelling of 221974514 in words is "two hundred twenty-one million, nine hundred seventy-four thousand, five hundred fourteen".