2102100202 has 4 divisors (see below), whose sum is σ = 3153150306. Its totient is φ = 1051050100.

The previous prime is 2102100191. The next prime is 2102100229. The reversal of 2102100202 is 2020012012.

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., 1561119121 + 540981081 = 39511^2 + 23259^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525525049 + ... + 525525052.

Almost surely, 2^2102100202 is an apocalyptic number.

2102100202 is a deficient number, since it is larger than the sum of its proper divisors (1051050104).

2102100202 is a wasteful number, since it uses less digits than its factorization.

2102100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051050103.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2102100202 is about 45848.6663055753. Note that the first 3 decimals coincide. The cubic root of 2102100202 is about 1281.0059235341.

Adding to 2102100202 its reverse (2020012012), we get a palindrome (4122112214).

The spelling of 2102100202 in words is "two billion, one hundred two million, one hundred thousand, two hundred two".