221203231102 has 16 divisors (see below), whose sum is σ = 379453260672. Its totient is φ = 94739454360.

The previous prime is 221203231091. The next prime is 221203231103. The reversal of 221203231102 is 201132302122.

It is a self number, because there is not a number n which added to its sum of digits gives 221203231102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221203231103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5138668 + ... + 5181535.

It is an arithmetic number, because the mean of its divisors is an integer number (23715828792).

Almost surely, 2^221203231102 is an apocalyptic number.

221203231102 is a deficient number, since it is larger than the sum of its proper divisors (158250029570).

221203231102 is a wasteful number, since it uses less digits than its factorization.

221203231102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321743.

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

Adding to 221203231102 its reverse (201132302122), we get a palindrome (422335533224).

The spelling of 221203231102 in words is "two hundred twenty-one billion, two hundred three million, two hundred thirty-one thousand, one hundred two".