12312312100202 has 4 divisors (see below), whose sum is σ = 18468468150306. Its totient is φ = 6156156050100.

The previous prime is 12312312100199. The next prime is 12312312100229. The reversal of 12312312100202 is 20200121321321.

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., 8186745840001 + 4125566260201 = 2861249^2 + 2031149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078078025049 + ... + 3078078025052.

Almost surely, 2^{12312312100202} is an apocalyptic number.

12312312100202 is a deficient number, since it is larger than the sum of its proper divisors (6156156050104).

12312312100202 is an equidigital number, since it uses as much as digits as its factorization.

12312312100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156156050103.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12312312100202 its reverse (20200121321321), we get a palindrome (32512433421523).

The spelling of 12312312100202 in words is "twelve trillion, three hundred twelve billion, three hundred twelve million, one hundred thousand, two hundred two".