12210020221122 has 24 divisors (see below), whose sum is σ = 26455211409276. Its totient is φ = 4069980956256.

The previous prime is 12210020221121. The next prime is 12210020221163. The reversal of 12210020221122 is 22112202001221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10018877198121 + 2191143023001 = 3165261^2 + 1480251^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12210020221095 and 12210020221104.

It is not an unprimeable number, because it can be changed into a prime (12210020221121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 887488 + ... + 5020724.

Almost surely, 2^{12210020221122} is an apocalyptic number.

12210020221122 is an abundant number, since it is smaller than the sum of its proper divisors (14245191188154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210020221122 is a wasteful number, since it uses less digits than its factorization.

12210020221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4297362 (or 4297359 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12210020221122 its reverse (22112202001221), we get a palindrome (34322222222343).

The spelling of 12210020221122 in words is "twelve trillion, two hundred ten billion, twenty million, two hundred twenty-one thousand, one hundred twenty-two".