221152042 has 8 divisors (see below), whose sum is σ = 331874532. Its totient is φ = 110527200.

The previous prime is 221152037. The next prime is 221152067. The reversal of 221152042 is 240251122.

It can be written as a sum of positive squares in 2 ways, for example, as 155525841 + 65626201 = 12471^2 + 8101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18459 + ... + 27982.

Almost surely, 2^221152042 is an apocalyptic number.

221152042 is a deficient number, since it is larger than the sum of its proper divisors (110722490).

221152042 is a wasteful number, since it uses less digits than its factorization.

221152042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48824.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 221152042 is about 14871.1815939420. The cubic root of 221152042 is about 604.7329759864.

The spelling of 221152042 in words is "two hundred twenty-one million, one hundred fifty-two thousand, forty-two".