221202102102 has 32 divisors (see below), whose sum is σ = 453338623584. Its totient is φ = 71912774400.

The previous prime is 221202102083. The next prime is 221202102113. The reversal of 221202102102 is 201201202122.

221202102102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641188 + ... + 923864.

It is an arithmetic number, because the mean of its divisors is an integer number (14166831987).

Almost surely, 2^221202102102 is an apocalyptic number.

221202102102 is an abundant number, since it is smaller than the sum of its proper divisors (232136521482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221202102102 is a wasteful number, since it uses less digits than its factorization.

221202102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285904.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221202102102 its reverse (201201202122), we get a palindrome (422403304224).

The spelling of 221202102102 in words is "two hundred twenty-one billion, two hundred two million, one hundred two thousand, one hundred two".