201021021102102 has 16 divisors (see below), whose sum is σ = 404934430998720. Its totient is φ = 66524942234952.

The previous prime is 201021021102053. The next prime is 201021021102163. The reversal of 201021021102102 is 201201120120102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120516198868 + ... + 120516200535.

It is an arithmetic number, because the mean of its divisors is an integer number (25308401937420).

Almost surely, 2^{201021021102102} is an apocalyptic number.

201021021102102 is an abundant number, since it is smaller than the sum of its proper divisors (203913409896618).

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

201021021102102 is a wasteful number, since it uses less digits than its factorization.

201021021102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241032399547.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201021021102102 its reverse (201201120120102), we get a palindrome (402222141222204).

The spelling of 201021021102102 in words is "two hundred one trillion, twenty-one billion, twenty-one million, one hundred two thousand, one hundred two".