12028894081 has 2 divisors, whose sum is σ = 12028894082. Its totient is φ = 12028894080.

The previous prime is 12028894013. The next prime is 12028894103. The reversal of 12028894081 is 18049882021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8296295056 + 3732599025 = 91084^2 + 61095^2 .

It is a cyclic number.

It is not a de Polignac number, because 12028894081 - 2¹¹ = 12028892033 is a prime.

It is a super-2 number, since 2×12028894081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12028894981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6014447040 + 6014447041.

It is an arithmetic number, because the mean of its divisors is an integer number (6014447041).

Almost surely, 2^12028894081 is an apocalyptic number.

It is an amenable number.

12028894081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12028894081 is an equidigital number, since it uses as much as digits as its factorization.

12028894081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 43.

It can be divided in two parts, 120288 and 94081, that added together give a square (214369 = 463²).

The spelling of 12028894081 in words is "twelve billion, twenty-eight million, eight hundred ninety-four thousand, eighty-one".