221319674 has 4 divisors (see below), whose sum is σ = 331979514. Its totient is φ = 110659836.

The previous prime is 221319661. The next prime is 221319689. The reversal of 221319674 is 476913122.

221319674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 162690025 + 58629649 = 12755^2 + 7657^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55329917 + ... + 55329920.

Almost surely, 2^221319674 is an apocalyptic number.

221319674 is a deficient number, since it is larger than the sum of its proper divisors (110659840).

221319674 is a wasteful number, since it uses less digits than its factorization.

221319674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110659839.

The product of its digits is 18144, while the sum is 35.

The square root of 221319674 is about 14876.8166621761. The cubic root of 221319674 is about 604.8857321246.

The spelling of 221319674 in words is "two hundred twenty-one million, three hundred nineteen thousand, six hundred seventy-four".