12021211020122 has 8 divisors (see below), whose sum is σ = 18031875952500. Its totient is φ = 6010585702624.

The previous prime is 12021211020121. The next prime is 12021211020167. The reversal of 12021211020122 is 22102011212021.

It can be written as a sum of positive squares in 2 ways, for example, as 11728152280321 + 293058739801 = 3424639^2 + 541349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12021211020122.

It is not an unprimeable number, because it can be changed into a prime (12021211020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9133097 + ... + 10366092.

Almost surely, 2^{12021211020122} is an apocalyptic number.

12021211020122 is a deficient number, since it is larger than the sum of its proper divisors (6010664932378).

12021211020122 is a wasteful number, since it uses less digits than its factorization.

12021211020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19807440.

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

Adding to 12021211020122 its reverse (22102011212021), we get a palindrome (34123222232143).

The spelling of 12021211020122 in words is "twelve trillion, twenty-one billion, two hundred eleven million, twenty thousand, one hundred twenty-two".