12028213741 has 4 divisors (see below), whose sum is σ = 12163362300. Its totient is φ = 11893065184.

The previous prime is 12028213733. The next prime is 12028213787. The reversal of 12028213741 is 14731282021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4987325641 + 7040888100 = 70621^2 + 83910^2 .

It is a cyclic number.

It is not a de Polignac number, because 12028213741 - 2³ = 12028213733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028213721) 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, 67574146 + ... + 67574323.

It is an arithmetic number, because the mean of its divisors is an integer number (3040840575).

Almost surely, 2^12028213741 is an apocalyptic number.

It is an amenable number.

12028213741 is a deficient number, since it is larger than the sum of its proper divisors (135148559).

12028213741 is an equidigital number, since it uses as much as digits as its factorization.

12028213741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135148558.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 12028213741 its reverse (14731282021), we get a palindrome (26759495762).

The spelling of 12028213741 in words is "twelve billion, twenty-eight million, two hundred thirteen thousand, seven hundred forty-one".