12002012012320 has 72 divisors (see below), whose sum is σ = 31166795086812. Its totient is φ = 4364367997440.

The previous prime is 12002012012299. The next prime is 12002012012371. The reversal of 12002012012320 is 2321021020021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11988241459216 + 13770553104 = 3462404^2 + 117348^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12002012012294 and 12002012012303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309949959 + ... + 309988678.

Almost surely, 2^{12002012012320} is an apocalyptic number.

12002012012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002012012320 is an abundant number, since it is smaller than the sum of its proper divisors (19164783074492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12002012012320 is a wasteful number, since it uses less digits than its factorization.

12002012012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619938674 (or 619938655 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12002012012320 its reverse (2321021020021), we get a palindrome (14323033032341).

The spelling of 12002012012320 in words is "twelve trillion, two billion, twelve million, twelve thousand, three hundred twenty".