12020533243 has 4 divisors (see below), whose sum is σ = 12087687240. Its totient is φ = 11953379248.

The previous prime is 12020533241. The next prime is 12020533253. The reversal of 12020533243 is 34233502021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020533243 - 2¹ = 12020533241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020533241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33576730 + ... + 33577087.

It is an arithmetic number, because the mean of its divisors is an integer number (3021921810).

Almost surely, 2^12020533243 is an apocalyptic number.

12020533243 is a deficient number, since it is larger than the sum of its proper divisors (67153997).

12020533243 is an equidigital number, since it uses as much as digits as its factorization.

12020533243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67153996.

The product of its (nonzero) digits is 4320, while the sum is 25.

The spelling of 12020533243 in words is "twelve billion, twenty million, five hundred thirty-three thousand, two hundred forty-three".