1002002022 has 32 divisors (see below), whose sum is σ = 2544768000. Its totient is φ = 286286184.

The previous prime is 1002002021. The next prime is 1002002033. The reversal of 1002002022 is 2202002001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002001995 and 1002002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002002021) 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, 1325022 + ... + 1325777.

It is an arithmetic number, because the mean of its divisors is an integer number (79524000).

Almost surely, 2^1002002022 is an apocalyptic number.

1002002022 is an abundant number, since it is smaller than the sum of its proper divisors (1542765978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002002022 is a wasteful number, since it uses less digits than its factorization.

1002002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650817 (or 2650811 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1002002022 is about 31654.4155213771. The cubic root of 1002002022 is about 1000.6668958178. Note that the first 3 decimals are identical.

Adding to 1002002022 its reverse (2202002001), we get a palindrome (3204004023).

The spelling of 1002002022 in words is "one billion, two million, two thousand, twenty-two".