12011257233 has 8 divisors (see below), whose sum is σ = 17794455200. Its totient is φ = 8007504804.

The previous prime is 12011257183. The next prime is 12011257243. The reversal of 12011257233 is 33275211021.

It is not a de Polignac number, because 12011257233 - 2⁶ = 12011257169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 444861379 = 12011257233 / (1 + 2 + 0 + 1 + 1 + 2 + 5 + 7 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011257197 and 12011257206.

It is not an unprimeable number, because it can be changed into a prime (12011257243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222430663 + ... + 222430716.

It is an arithmetic number, because the mean of its divisors is an integer number (2224306900).

Almost surely, 2^12011257233 is an apocalyptic number.

It is an amenable number.

12011257233 is a deficient number, since it is larger than the sum of its proper divisors (5783197967).

12011257233 is an equidigital number, since it uses as much as digits as its factorization.

12011257233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444861388 (or 444861382 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 12011257233 its reverse (33275211021), we get a palindrome (45286468254).

The spelling of 12011257233 in words is "twelve billion, eleven million, two hundred fifty-seven thousand, two hundred thirty-three".