221201102 has 4 divisors (see below), whose sum is σ = 331801656. Its totient is φ = 110600550.

The previous prime is 221201083. The next prime is 221201117. The reversal of 221201102 is 201102122.

It is a happy number.

221201102 is digitally balanced in base 3, 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55300274 + ... + 55300277.

It is an arithmetic number, because the mean of its divisors is an integer number (82950414).

Almost surely, 2^221201102 is an apocalyptic number.

221201102 is a deficient number, since it is larger than the sum of its proper divisors (110600554).

221201102 is a wasteful number, since it uses less digits than its factorization.

221201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110600553.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 221201102 is about 14872.8310015276. The cubic root of 221201102 is about 604.7776903315. Note that the first 3 decimals are identical.

Adding to 221201102 its reverse (201102122), we get a palindrome (422303224).

The spelling of 221201102 in words is "two hundred twenty-one million, two hundred one thousand, one hundred two".