1002002011 has 4 divisors (see below), whose sum is σ = 1011194800. Its totient is φ = 992809224.

The previous prime is 1002002009. The next prime is 1002002021. The reversal of 1002002011 is 1102002001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1102002001 = 29 ⋅38000069.

It is a cyclic number.

It is not a de Polignac number, because 1002002011 - 2¹ = 1002002009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002001985 and 1002002003.

It is not an unprimeable number, because it can be changed into a prime (1002002021) 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, 4596231 + ... + 4596448.

It is an arithmetic number, because the mean of its divisors is an integer number (252798700).

Almost surely, 2^1002002011 is an apocalyptic number.

1002002011 is a deficient number, since it is larger than the sum of its proper divisors (9192789).

1002002011 is an equidigital number, since it uses as much as digits as its factorization.

1002002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9192788.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1002002011 is about 31654.4153476257. The cubic root of 1002002011 is about 1000.6668921560. Note that the first 3 decimals are identical.

Adding to 1002002011 its reverse (1102002001), we get a palindrome (2104004012).

The spelling of 1002002011 in words is "one billion, two million, two thousand, eleven".