12002212112122 has 4 divisors (see below), whose sum is σ = 18003318168186. Its totient is φ = 6001106056060.

The previous prime is 12002212112113. The next prime is 12002212112123. The reversal of 12002212112122 is 22121121220021.

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., 12000550000761 + 1662111361 = 3464181^2 + 40769^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12002212112122.

It is not an unprimeable number, because it can be changed into a prime (12002212112123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3000553028029 + ... + 3000553028032.

Almost surely, 2^{12002212112122} is an apocalyptic number.

12002212112122 is a deficient number, since it is larger than the sum of its proper divisors (6001106056064).

12002212112122 is an equidigital number, since it uses as much as digits as its factorization.

12002212112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001106056063.

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

Adding to 12002212112122 its reverse (22121121220021), we get a palindrome (34123333332143).

The spelling of 12002212112122 in words is "twelve trillion, two billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".