12021402241 has 2 divisors, whose sum is σ = 12021402242. Its totient is φ = 12021402240.

The previous prime is 12021402227. The next prime is 12021402251. The reversal of 12021402241 is 14220412021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11996601841 + 24800400 = 109529^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021402241 - 2⁵ = 12021402209 is a prime.

It is a super-2 number, since 2×12021402241² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12021402221) 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 as a sum of consecutive naturals, namely, 6010701120 + 6010701121.

It is an arithmetic number, because the mean of its divisors is an integer number (6010701121).

Almost surely, 2^12021402241 is an apocalyptic number.

It is an amenable number.

12021402241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021402241 is an equidigital number, since it uses as much as digits as its factorization.

12021402241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12021402241 its reverse (14220412021), we get a palindrome (26241814262).

The spelling of 12021402241 in words is "twelve billion, twenty-one million, four hundred two thousand, two hundred forty-one".