12022021012123 has 4 divisors (see below), whose sum is σ = 12277808693280. Its totient is φ = 11766233330968.

The previous prime is 12022021012073. The next prime is 12022021012163. The reversal of 12022021012123 is 32121012022021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12022021012123 - 2⁴¹ = 9822997756571 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 12022021012123.

It is not an unprimeable number, because it can be changed into a prime (12022021012163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127893840508 + ... + 127893840601.

It is an arithmetic number, because the mean of its divisors is an integer number (3069452173320).

Almost surely, 2^{12022021012123} is an apocalyptic number.

12022021012123 is a deficient number, since it is larger than the sum of its proper divisors (255787681157).

12022021012123 is an equidigital number, since it uses as much as digits as its factorization.

12022021012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255787681156.

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

Adding to 12022021012123 its reverse (32121012022021), we get a palindrome (44143033034144).

The spelling of 12022021012123 in words is "twelve trillion, twenty-two billion, twenty-one million, twelve thousand, one hundred twenty-three".