1002110020221 has 4 divisors (see below), whose sum is σ = 1336146693632. Its totient is φ = 668073346812.

The previous prime is 1002110020201. The next prime is 1002110020229. The reversal of 1002110020221 is 1220200112001.

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 not a de Polignac number, because 1002110020221 - 2⁵ = 1002110020189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1002110020197 and 1002110020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002110020229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167018336701 + ... + 167018336706.

It is an arithmetic number, because the mean of its divisors is an integer number (334036673408).

Almost surely, 2^{1002110020221} is an apocalyptic number.

It is an amenable number.

1002110020221 is a deficient number, since it is larger than the sum of its proper divisors (334036673411).

1002110020221 is an equidigital number, since it uses as much as digits as its factorization.

1002110020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334036673410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002110020221 its reverse (1220200112001), we get a palindrome (2222310132222).

The spelling of 1002110020221 in words is "one trillion, two billion, one hundred ten million, twenty thousand, two hundred twenty-one".