12920927233 has 4 divisors (see below), whose sum is σ = 12921388480. Its totient is φ = 12920465988.

The previous prime is 12920927221. The next prime is 12920927249. The reversal of 12920927233 is 33272902921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33272902921 = 75629 ⋅439949.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12920927233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12920927933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185685 + ... + 245602.

It is an arithmetic number, because the mean of its divisors is an integer number (3230347120).

Almost surely, 2^12920927233 is an apocalyptic number.

It is an amenable number.

12920927233 is a deficient number, since it is larger than the sum of its proper divisors (461247).

12920927233 is an equidigital number, since it uses as much as digits as its factorization.

12920927233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461246.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 12920927233 in words is "twelve billion, nine hundred twenty million, nine hundred twenty-seven thousand, two hundred thirty-three".