1002211221002 has 8 divisors (see below), whose sum is σ = 1539983095812. Its totient is φ = 488883522400.

The previous prime is 1002211220957. The next prime is 1002211221007. The reversal of 1002211221002 is 2001221122001.

It can be written as a sum of positive squares in 2 ways, for example, as 761708272081 + 240502948921 = 872759^2 + 490411^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1002211221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6111043949 + ... + 6111044112.

Almost surely, 2^{1002211221002} is an apocalyptic number.

1002211221002 is a deficient number, since it is larger than the sum of its proper divisors (537771874810).

1002211221002 is a wasteful number, since it uses less digits than its factorization.

1002211221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12222088104.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1002211221002 its reverse (2001221122001), we get a palindrome (3003432343003).

Subtracting 1002211221002 from its reverse (2001221122001), we obtain a palindrome (999009900999).

The spelling of 1002211221002 in words is "one trillion, two billion, two hundred eleven million, two hundred twenty-one thousand, two".