210001002 has 16 divisors (see below), whose sum is σ = 422679072. Its totient is φ = 69554160.

The previous prime is 210000953. The next prime is 210001003. The reversal of 210001002 is 200100012.

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 (210001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110524 + ... + 112407.

It is an arithmetic number, because the mean of its divisors is an integer number (26417442).

Almost surely, 2^210001002 is an apocalyptic number.

210001002 is an abundant number, since it is smaller than the sum of its proper divisors (212678070).

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

210001002 is a wasteful number, since it uses less digits than its factorization.

210001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223093.

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

The square root of 210001002 is about 14491.4113184327. The cubic root of 210001002 is about 594.3931406414.

Adding to 210001002 its reverse (200100012), we get a palindrome (410101014).

The spelling of 210001002 in words is "two hundred ten million, one thousand, two".