12021130312 has 8 divisors (see below), whose sum is σ = 22539619350. Its totient is φ = 6010565152.

The previous prime is 12021130283. The next prime is 12021130327. The reversal of 12021130312 is 21303112021.

It can be written as a sum of positive squares in only one way, i.e., 11988936036 + 32194276 = 109494^2 + 5674^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751320637 + ... + 751320652.

Almost surely, 2^12021130312 is an apocalyptic number.

It is an amenable number.

12021130312 is a deficient number, since it is larger than the sum of its proper divisors (10518489038).

12021130312 is a wasteful number, since it uses less digits than its factorization.

12021130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502641295 (or 1502641291 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12021130312 its reverse (21303112021), we get a palindrome (33324242333).

The spelling of 12021130312 in words is "twelve billion, twenty-one million, one hundred thirty thousand, three hundred twelve".