1002021122002 has 16 divisors (see below), whose sum is σ = 1544648320152. Its totient is φ = 487155790080.

The previous prime is 1002021121967. The next prime is 1002021122023. The reversal of 1002021122002 is 2002211202001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 999842006241 + 2179115761 = 999921^2 + 46681^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4244649 + ... + 4474492.

Almost surely, 2^{1002021122002} is an apocalyptic number.

1002021122002 is a deficient number, since it is larger than the sum of its proper divisors (542627198150).

1002021122002 is a wasteful number, since it uses less digits than its factorization.

1002021122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720733.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002021122002 its reverse (2002211202001), we get a palindrome (3004232324003).

The spelling of 1002021122002 in words is "one trillion, two billion, twenty-one million, one hundred twenty-two thousand, two".