221052122 has 8 divisors (see below), whose sum is σ = 351082836. Its totient is φ = 104024512.

The previous prime is 221052113. The next prime is 221052187. The reversal of 221052122 is 221250122.

It can be written as a sum of positive squares in 2 ways, for example, as 215766721 + 5285401 = 14689^2 + 2299^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 221052122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3250733 + ... + 3250800.

Almost surely, 2^221052122 is an apocalyptic number.

221052122 is a deficient number, since it is larger than the sum of its proper divisors (130030714).

221052122 is a wasteful number, since it uses less digits than its factorization.

221052122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501552.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 221052122 is about 14867.8216965364. The cubic root of 221052122 is about 604.6418862832.

The spelling of 221052122 in words is "two hundred twenty-one million, fifty-two thousand, one hundred twenty-two".