221326102 has 32 divisors (see below), whose sum is σ = 356493312. Its totient is φ = 102811104.

The previous prime is 221326069. The next prime is 221326109. The reversal of 221326102 is 201623122.

It is a self number, because there is not a number n which added to its sum of digits gives 221326102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221326109) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 360748 + ... + 361360.

It is an arithmetic number, because the mean of its divisors is an integer number (11140416).

Almost surely, 2^221326102 is an apocalyptic number.

221326102 is a deficient number, since it is larger than the sum of its proper divisors (135167210).

221326102 is a wasteful number, since it uses less digits than its factorization.

221326102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 221326102 is about 14877.0327014496. The cubic root of 221326102 is about 604.8915881605.

Adding to 221326102 its reverse (201623122), we get a palindrome (422949224).

The spelling of 221326102 in words is "two hundred twenty-one million, three hundred twenty-six thousand, one hundred two".