12221001022123 has 16 divisors (see below), whose sum is σ = 12363874405344. Its totient is φ = 12078483701760.

The previous prime is 12221001022117. The next prime is 12221001022141. The reversal of 12221001022123 is 32122010012221.

It is a cyclic number.

It is not a de Polignac number, because 12221001022123 - 2⁵ = 12221001022091 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 12221001022123.

It is not an unprimeable number, because it can be changed into a prime (12221001022103) 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, 214763211 + ... + 214820107.

It is an arithmetic number, because the mean of its divisors is an integer number (772742150334).

Almost surely, 2^{12221001022123} is an apocalyptic number.

12221001022123 is a deficient number, since it is larger than the sum of its proper divisors (142873383221).

12221001022123 is a wasteful number, since it uses less digits than its factorization.

12221001022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59982.

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

Adding to 12221001022123 its reverse (32122010012221), we get a palindrome (44343011034344).

The spelling of 12221001022123 in words is "twelve trillion, two hundred twenty-one billion, one million, twenty-two thousand, one hundred twenty-three".