12212585611802 has 4 divisors (see below), whose sum is σ = 18318878417706. Its totient is φ = 6106292805900.

The previous prime is 12212585611771. The next prime is 12212585611817. The reversal of 12212585611802 is 20811658521221.

It is a Cunningham number, because it is equal to 3494651²+1.

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., 12212585611801 + 1 = 3494651^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053146402949 + ... + 3053146402952.

Almost surely, 2^{12212585611802} is an apocalyptic number.

12212585611802 is a deficient number, since it is larger than the sum of its proper divisors (6106292805904).

12212585611802 is an equidigital number, since it uses as much as digits as its factorization.

12212585611802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106292805903.

The product of its (nonzero) digits is 153600, while the sum is 44.

The spelling of 12212585611802 in words is "twelve trillion, two hundred twelve billion, five hundred eighty-five million, six hundred eleven thousand, eight hundred two".