221201246 has 16 divisors (see below), whose sum is σ = 401508576. Its totient is φ = 89223936.

The previous prime is 221201203. The next prime is 221201257. The reversal of 221201246 is 642102122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464471 + ... + 464946.

It is an arithmetic number, because the mean of its divisors is an integer number (25094286).

Almost surely, 2^221201246 is an apocalyptic number.

221201246 is a deficient number, since it is larger than the sum of its proper divisors (180307330).

221201246 is a wasteful number, since it uses less digits than its factorization.

221201246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929443.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 221201246 is about 14872.8358425688. The cubic root of 221201246 is about 604.7778215665. Note that the first 3 decimals are identical.

Adding to 221201246 its reverse (642102122), we get a palindrome (863303368).

The spelling of 221201246 in words is "two hundred twenty-one million, two hundred one thousand, two hundred forty-six".