221331310102 has 32 divisors (see below), whose sum is σ = 382998528000. Its totient is φ = 93963341088.

The previous prime is 221331310073. The next prime is 221331310103. The reversal of 221331310102 is 201013133122.

221331310102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221331310102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331310103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7308163 + ... + 7338385.

It is an arithmetic number, because the mean of its divisors is an integer number (11968704000).

Almost surely, 2^221331310102 is an apocalyptic number.

221331310102 is a deficient number, since it is larger than the sum of its proper divisors (161667217898).

221331310102 is a wasteful number, since it uses less digits than its factorization.

221331310102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35140.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221331310102 its reverse (201013133122), we get a palindrome (422344443224).

The spelling of 221331310102 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred ten thousand, one hundred two".