12012121321031 has 16 divisors (see below), whose sum is σ = 12941905284000. Its totient is φ = 11083163465088.

The previous prime is 12012121321021. The next prime is 12012121321051. The reversal of 12012121321031 is 13012312121021.

It is not a de Polignac number, because 12012121321031 - 2¹⁴ = 12012121304647 is a prime.

It is a super-2 number, since 2×12012121321031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012121320994 and 12012121321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012121321021) 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, 314854745 + ... + 314892893.

It is an arithmetic number, because the mean of its divisors is an integer number (808869080250).

Almost surely, 2^{12012121321031} is an apocalyptic number.

12012121321031 is a deficient number, since it is larger than the sum of its proper divisors (929783962969).

12012121321031 is a wasteful number, since it uses less digits than its factorization.

12012121321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48338.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12012121321031 its reverse (13012312121021), we get a palindrome (25024433442052).

The spelling of 12012121321031 in words is "twelve trillion, twelve billion, one hundred twenty-one million, three hundred twenty-one thousand, thirty-one".