2101102002 has 24 divisors (see below), whose sum is σ = 4638283884. Its totient is φ = 687152544.

The previous prime is 2101101979. The next prime is 2101102013. The reversal of 2101102002 is 2002011012.

It can be written as a sum of positive squares in 2 ways, for example, as 1915025121 + 186076881 = 43761^2 + 13641^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1100253 + ... + 1102160.

Almost surely, 2^2101102002 is an apocalyptic number.

2101102002 is an abundant number, since it is smaller than the sum of its proper divisors (2537181882).

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

2101102002 is a wasteful number, since it uses less digits than its factorization.

2101102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202474 (or 2202471 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2101102002 is about 45837.7792001314. The cubic root of 2101102002 is about 1280.8031259437.

Adding to 2101102002 its reverse (2002011012), we get a palindrome (4103113014).

The spelling of 2101102002 in words is "two billion, one hundred one million, one hundred two thousand, two".