12210002012122 has 4 divisors (see below), whose sum is σ = 18315003018186. Its totient is φ = 6105001006060.

The previous prime is 12210002012081. The next prime is 12210002012137. The reversal of 12210002012122 is 22121020001221.

It is a happy number.

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., 9092160733041 + 3117841279081 = 3015321^2 + 1765741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12210002012096 and 12210002012105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052500503029 + ... + 3052500503032.

Almost surely, 2^{12210002012122} is an apocalyptic number.

12210002012122 is a deficient number, since it is larger than the sum of its proper divisors (6105001006064).

12210002012122 is an equidigital number, since it uses as much as digits as its factorization.

12210002012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105001006063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12210002012122 its reverse (22121020001221), we get a palindrome (34331022013343).

The spelling of 12210002012122 in words is "twelve trillion, two hundred ten billion, two million, twelve thousand, one hundred twenty-two".