1002001021622 has 32 divisors (see below), whose sum is σ = 1595369198592. Its totient is φ = 470358509184.

The previous prime is 1002001021621. The next prime is 1002001021633. The reversal of 1002001021622 is 2261201002001.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1002001021622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002001021621) 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 15 ways as a sum of consecutive naturals, for example, 54976403 + ... + 54994625.

It is an arithmetic number, because the mean of its divisors is an integer number (49855287456).

Almost surely, 2^{1002001021622} is an apocalyptic number.

1002001021622 is a deficient number, since it is larger than the sum of its proper divisors (593368176970).

1002001021622 is a wasteful number, since it uses less digits than its factorization.

1002001021622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22172.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1002001021622 its reverse (2261201002001), we get a palindrome (3263202023623).

The spelling of 1002001021622 in words is "one trillion, two billion, one million, twenty-one thousand, six hundred twenty-two".