12221020333123 has 12 divisors (see below), whose sum is σ = 14320057499352. Its totient is φ = 10398699255840.

The previous prime is 12221020333087. The next prime is 12221020333211. The reversal of 12221020333123 is 32133302012221.

12221020333123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12221020333123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221020333523) 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, 910243573 + ... + 910256998.

It is an arithmetic number, because the mean of its divisors is an integer number (1193338124946).

Almost surely, 2^{12221020333123} is an apocalyptic number.

12221020333123 is a deficient number, since it is larger than the sum of its proper divisors (2099037166229).

12221020333123 is a wasteful number, since it uses less digits than its factorization.

12221020333123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820500722 (or 1820500715 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 12221020333123 its reverse (32133302012221), we get a palindrome (44354322345344).

The spelling of 12221020333123 in words is "twelve trillion, two hundred twenty-one billion, twenty million, three hundred thirty-three thousand, one hundred twenty-three".