12001001978233 has 2 divisors, whose sum is σ = 12001001978234. Its totient is φ = 12001001978232.

The previous prime is 12001001978219. The next prime is 12001001978291. The reversal of 12001001978233 is 33287910010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10988376376384 + 1012625601849 = 3314872^2 + 1006293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001001978233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001001978192 and 12001001978201.

It is not a weakly prime, because it can be changed into another prime (12001001978213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500989116 + 6000500989117.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500989117).

Almost surely, 2^{12001001978233} is an apocalyptic number.

It is an amenable number.

12001001978233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001001978233 is an equidigital number, since it uses as much as digits as its factorization.

12001001978233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

Adding to 12001001978233 its reverse (33287910010021), we get a palindrome (45288911988254).

The spelling of 12001001978233 in words is "twelve trillion, one billion, one million, nine hundred seventy-eight thousand, two hundred thirty-three".