12121110222002 has 4 divisors (see below), whose sum is σ = 18181665333006. Its totient is φ = 6060555111000.

The previous prime is 12121110221993. The next prime is 12121110222071. The reversal of 12121110222002 is 20022201112121.

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., 11663256352801 + 457853869201 = 3415151^2 + 676649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030277555499 + ... + 3030277555502.

Almost surely, 2^{12121110222002} is an apocalyptic number.

12121110222002 is a deficient number, since it is larger than the sum of its proper divisors (6060555111004).

12121110222002 is an equidigital number, since it uses as much as digits as its factorization.

12121110222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060555111003.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12121110222002 its reverse (20022201112121), we get a palindrome (32143311334123).

The spelling of 12121110222002 in words is "twelve trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, two".