4021312012441 has 2 divisors, whose sum is σ = 4021312012442. Its totient is φ = 4021312012440.

The previous prime is 4021312012439. The next prime is 4021312012451. The reversal of 4021312012441 is 1442102131204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3918831996816 + 102480015625 = 1979604^2 + 320125^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021312012441 - 2¹ = 4021312012439 is a prime.

Together with 4021312012439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4021312012411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010656006220 + 2010656006221.

It is an arithmetic number, because the mean of its divisors is an integer number (2010656006221).

Almost surely, 2^{4021312012441} is an apocalyptic number.

It is an amenable number.

4021312012441 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021312012441 is an equidigital number, since it uses as much as digits as its factorization.

4021312012441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 4021312012441 its reverse (1442102131204), we get a palindrome (5463414143645).

The spelling of 4021312012441 in words is "four trillion, twenty-one billion, three hundred twelve million, twelve thousand, four hundred forty-one".