102100202 has 4 divisors (see below), whose sum is σ = 153150306. Its totient is φ = 51050100.

The previous prime is 102100199. The next prime is 102100211. The reversal of 102100202 is 202001201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202001201 = 173 ⋅1167637.

It can be written as a sum of positive squares in only one way, i.e., 97042201 + 5058001 = 9851^2 + 2249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102100202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525049 + ... + 25525052.

Almost surely, 2^102100202 is an apocalyptic number.

102100202 is a deficient number, since it is larger than the sum of its proper divisors (51050104).

102100202 is an equidigital number, since it uses as much as digits as its factorization.

102100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51050103.

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

The square root of 102100202 is about 10104.4644588419. The cubic root of 102100202 is about 467.3858216783.

Adding to 102100202 its reverse (202001201), we get a palindrome (304101403).

Subtracting 102100202 from its reverse (202001201), we obtain a palindrome (99900999).

The spelling of 102100202 in words is "one hundred two million, one hundred thousand, two hundred two".