12000312021 has 16 divisors (see below), whose sum is σ = 16275916800. Its totient is φ = 7862529648.

The previous prime is 12000312007. The next prime is 12000312041. The reversal of 12000312021 is 12021300021.

It is not a de Polignac number, because 12000312021 - 2¹³ = 12000303829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000311988 and 12000312006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000312041) 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, 950770 + ... + 963308.

It is an arithmetic number, because the mean of its divisors is an integer number (1017244800).

Almost surely, 2^12000312021 is an apocalyptic number.

It is an amenable number.

12000312021 is a deficient number, since it is larger than the sum of its proper divisors (4275604779).

12000312021 is a wasteful number, since it uses less digits than its factorization.

12000312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18008.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12000312021 its reverse (12021300021), we get a palindrome (24021612042).

The spelling of 12000312021 in words is "twelve billion, three hundred twelve thousand, twenty-one".