102021221102021 has 24 divisors (see below), whose sum is σ = 115104260124000. Its totient is φ = 90271930012992.

The previous prime is 102021221101993. The next prime is 102021221102063. The reversal of 102021221102021 is 120201122120201.

It is not a de Polignac number, because 102021221102021 - 2⁴⁶ = 31652476924357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021221152021) 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 23 ways as a sum of consecutive naturals, for example, 74197931 + ... + 75560408.

It is an arithmetic number, because the mean of its divisors is an integer number (4796010838500).

Almost surely, 2^{102021221102021} is an apocalyptic number.

It is an amenable number.

102021221102021 is a deficient number, since it is larger than the sum of its proper divisors (13083039021979).

102021221102021 is a wasteful number, since it uses less digits than its factorization.

102021221102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149758533 (or 149758520 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102021221102021 its reverse (120201122120201), we get a palindrome (222222343222222).

The spelling of 102021221102021 in words is "one hundred two trillion, twenty-one billion, two hundred twenty-one million, one hundred two thousand, twenty-one".