1002020100221 has 8 divisors (see below), whose sum is σ = 1184654305920. Its totient is φ = 829258013808.

The previous prime is 1002020100167. The next prime is 1002020100233. The reversal of 1002020100221 is 1220010202001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002020100221 - 2⁶ = 1002020100157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002020100241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2468029601 + ... + 2468030006.

It is an arithmetic number, because the mean of its divisors is an integer number (148081788240).

Almost surely, 2^{1002020100221} is an apocalyptic number.

It is an amenable number.

1002020100221 is a deficient number, since it is larger than the sum of its proper divisors (182634205699).

1002020100221 is an equidigital number, since it uses as much as digits as its factorization.

1002020100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936059643.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002020100221 its reverse (1220010202001), we get a palindrome (2222030302222).

The spelling of 1002020100221 in words is "one trillion, two billion, twenty million, one hundred thousand, two hundred twenty-one".