12020212120123 has 16 divisors (see below), whose sum is σ = 12072931336800. Its totient is φ = 11967646521600.

The previous prime is 12020212120109. The next prime is 12020212120153. The reversal of 12020212120123 is 32102121202021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020212120123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12020212120123.

It is not an unprimeable number, because it can be changed into a prime (12020212120153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334816228 + ... + 334852126.

It is an arithmetic number, because the mean of its divisors is an integer number (754558208550).

Almost surely, 2^{12020212120123} is an apocalyptic number.

12020212120123 is a deficient number, since it is larger than the sum of its proper divisors (52719216677).

12020212120123 is an equidigital number, since it uses as much as digits as its factorization.

12020212120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37998.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12020212120123 its reverse (32102121202021), we get a palindrome (44122333322144).

The spelling of 12020212120123 in words is "twelve trillion, twenty billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-three".