2102001002 has 4 divisors (see below), whose sum is σ = 3153001506. Its totient is φ = 1051000500.

The previous prime is 2102000933. The next prime is 2102001007. The reversal of 2102001002 is 2001002012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1578552361 + 523448641 = 39731^2 + 22879^2 .

It is not an unprimeable number, because it can be changed into a prime (2102001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525500249 + ... + 525500252.

Almost surely, 2^2102001002 is an apocalyptic number.

2102001002 is a deficient number, since it is larger than the sum of its proper divisors (1051000504).

2102001002 is a wasteful number, since it uses less digits than its factorization.

2102001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051000503.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2102001002 is about 45847.5844729033. The cubic root of 2102001002 is about 1280.9857726097.

Adding to 2102001002 its reverse (2001002012), we get a palindrome (4103003014).

The spelling of 2102001002 in words is "two billion, one hundred two million, one thousand, two".