10001002002 has 64 divisors (see below), whose sum is σ = 21625056000. Its totient is φ = 3073968128.

The previous prime is 10001001991. The next prime is 10001002009. The reversal of 10001002002 is 20020010001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (10001002009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3236074 + ... + 3239162.

It is an arithmetic number, because the mean of its divisors is an integer number (337891500).

Almost surely, 2^10001002002 is an apocalyptic number.

10001002002 is an abundant number, since it is smaller than the sum of its proper divisors (11624053998).

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

10001002002 is a wasteful number, since it uses less digits than its factorization.

10001002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 10001002002 its reverse (20020010001), we get a palindrome (30021012003).

The spelling of 10001002002 in words is "ten billion, one million, two thousand, two".