2123123321012 has 24 divisors (see below), whose sum is σ = 3755139112032. Its totient is φ = 1050275397600.

The previous prime is 2123123320993. The next prime is 2123123321027. The reversal of 2123123321012 is 2101233213212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5947043 + ... + 6293930.

It is an arithmetic number, because the mean of its divisors is an integer number (156464129668).

Almost surely, 2^{2123123321012} is an apocalyptic number.

It is an amenable number.

2123123321012 is a deficient number, since it is larger than the sum of its proper divisors (1632015791020).

2123123321012 is a wasteful number, since it uses less digits than its factorization.

2123123321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241439 (or 12241437 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2123123321012 its reverse (2101233213212), we get a palindrome (4224356534224).

The spelling of 2123123321012 in words is "two trillion, one hundred twenty-three billion, one hundred twenty-three million, three hundred twenty-one thousand, twelve".