12123013321012 has 192 divisors, whose sum is σ = 24708205412352. Its totient is φ = 5154164352000.

The previous prime is 12123013320953. The next prime is 12123013321121. The reversal of 12123013321012 is 21012331032121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1364124433 + ... + 1364133319.

It is an arithmetic number, because the mean of its divisors is an integer number (128688569856).

Almost surely, 2^{12123013321012} is an apocalyptic number.

It is an amenable number.

12123013321012 is an abundant number, since it is smaller than the sum of its proper divisors (12585192091340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123013321012 is a wasteful number, since it uses less digits than its factorization.

12123013321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278 (or 9276 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12123013321012 its reverse (21012331032121), we get a palindrome (33135344353133).

The spelling of 12123013321012 in words is "twelve trillion, one hundred twenty-three billion, thirteen million, three hundred twenty-one thousand, twelve".