102002020012221 has 16 divisors (see below), whose sum is σ = 155432254800384. Its totient is φ = 58286641606704.

The previous prime is 102002020012183. The next prime is 102002020012247. The reversal of 102002020012221 is 122210020200201.

It is not a de Polignac number, because 102002020012221 - 2⁶ = 102002020012157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102002020012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002020012021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3858835 + ... + 14795088.

It is an arithmetic number, because the mean of its divisors is an integer number (9714515925024).

Almost surely, 2^{102002020012221} is an apocalyptic number.

It is an amenable number.

102002020012221 is a deficient number, since it is larger than the sum of its proper divisors (53430234788163).

102002020012221 is a wasteful number, since it uses less digits than its factorization.

102002020012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18914320.

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

Adding to 102002020012221 its reverse (122210020200201), we get a palindrome (224212040212422).

The spelling of 102002020012221 in words is "one hundred two trillion, two billion, twenty million, twelve thousand, two hundred twenty-one".