12212112221002 has 4 divisors (see below), whose sum is σ = 18318168331506. Its totient is φ = 6106056110500.

The previous prime is 12212112220963. The next prime is 12212112221009. The reversal of 12212112221002 is 20012221121221.

12212112221002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 12024381529161 + 187730691841 = 3467619^2 + 433279^2 .

It is not an unprimeable number, because it can be changed into a prime (12212112221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053028055249 + ... + 3053028055252.

Almost surely, 2^{12212112221002} is an apocalyptic number.

12212112221002 is a deficient number, since it is larger than the sum of its proper divisors (6106056110504).

12212112221002 is an equidigital number, since it uses as much as digits as its factorization.

12212112221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106056110503.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12212112221002 its reverse (20012221121221), we get a palindrome (32224333342223).

The spelling of 12212112221002 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, two".