221141246 has 8 divisors (see below), whose sum is σ = 331775400. Its totient is φ = 110549448.

The previous prime is 221141243. The next prime is 221141257. The reversal of 221141246 is 642141122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221141243) 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 3 ways as a sum of consecutive naturals, for example, 12785 + ... + 24611.

It is an arithmetic number, because the mean of its divisors is an integer number (41471925).

Almost surely, 2^221141246 is an apocalyptic number.

221141246 is a deficient number, since it is larger than the sum of its proper divisors (110634154).

221141246 is a wasteful number, since it uses less digits than its factorization.

221141246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21178.

The product of its digits is 768, while the sum is 23.

The square root of 221141246 is about 14870.8186055778. The cubic root of 221141246 is about 604.7231353907.

Adding to 221141246 its reverse (642141122), we get a palindrome (863282368).

The spelling of 221141246 in words is "two hundred twenty-one million, one hundred forty-one thousand, two hundred forty-six".