1002021130221 has 4 divisors (see below), whose sum is σ = 1336028173632. Its totient is φ = 668014086812.

The previous prime is 1002021130217. The next prime is 1002021130223. The reversal of 1002021130221 is 1220311202001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002021130221 - 2² = 1002021130217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002021130221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021130223) 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 3 ways as a sum of consecutive naturals, for example, 167003521701 + ... + 167003521706.

It is an arithmetic number, because the mean of its divisors is an integer number (334007043408).

Almost surely, 2^{1002021130221} is an apocalyptic number.

It is an amenable number.

1002021130221 is a deficient number, since it is larger than the sum of its proper divisors (334007043411).

1002021130221 is an equidigital number, since it uses as much as digits as its factorization.

1002021130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334007043410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1002021130221 its reverse (1220311202001), we get a palindrome (2222332332222).

The spelling of 1002021130221 in words is "one trillion, two billion, twenty-one million, one hundred thirty thousand, two hundred twenty-one".