2012321321123 has 16 divisors (see below), whose sum is σ = 2148664877280. Its totient is φ = 1878032411136.

The previous prime is 2012321321083. The next prime is 2012321321167. The reversal of 2012321321123 is 3211231232102.

It is a cyclic number.

It is not a de Polignac number, because 2012321321123 - 2¹⁰ = 2012321320099 is a prime.

It is a super-2 number, since 2×2012321321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012321323123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 211961 + ... + 2017317.

It is an arithmetic number, because the mean of its divisors is an integer number (134291554830).

Almost surely, 2^{2012321321123} is an apocalyptic number.

2012321321123 is a deficient number, since it is larger than the sum of its proper divisors (136343556157).

2012321321123 is a wasteful number, since it uses less digits than its factorization.

2012321321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805926.

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

Adding to 2012321321123 its reverse (3211231232102), we get a palindrome (5223552553225).

The spelling of 2012321321123 in words is "two trillion, twelve billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-three".