1002202212221 has 16 divisors (see below), whose sum is σ = 1196719121664. Its totient is φ = 820618237824.

The previous prime is 1002202212211. The next prime is 1002202212223. The reversal of 1002202212221 is 1222122022001.

It is a happy number.

It is not a de Polignac number, because 1002202212221 - 2¹⁸ = 1002201950077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002202212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002202212223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3901976 + ... + 4150881.

It is an arithmetic number, because the mean of its divisors is an integer number (74794945104).

Almost surely, 2^{1002202212221} is an apocalyptic number.

It is an amenable number.

1002202212221 is a deficient number, since it is larger than the sum of its proper divisors (194516909443).

1002202212221 is an equidigital number, since it uses as much as digits as its factorization.

1002202212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053660.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1002202212221 its reverse (1222122022001), we get a palindrome (2224324234222).

The spelling of 1002202212221 in words is "one trillion, two billion, two hundred two million, two hundred twelve thousand, two hundred twenty-one".