102021003221 has 16 divisors (see below), whose sum is σ = 104647016448. Its totient is φ = 99414730800.

The previous prime is 102021003181. The next prime is 102021003257. The reversal of 102021003221 is 122300120201.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021003221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021003196 and 102021003205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021003521) 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, 14481926 + ... + 14488968.

It is an arithmetic number, because the mean of its divisors is an integer number (6540438528).

Almost surely, 2^102021003221 is an apocalyptic number.

It is an amenable number.

102021003221 is a deficient number, since it is larger than the sum of its proper divisors (2626013227).

102021003221 is an equidigital number, since it uses as much as digits as its factorization.

102021003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102021003221 its reverse (122300120201), we get a palindrome (224321123422).

The spelling of 102021003221 in words is "one hundred two billion, twenty-one million, three thousand, two hundred twenty-one".