43112414221 has 2 divisors, whose sum is σ = 43112414222. Its totient is φ = 43112414220.

The previous prime is 43112414207. The next prime is 43112414231. The reversal of 43112414221 is 12241421134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23989672996 + 19122741225 = 154886^2 + 138285^2 .

It is a cyclic number.

It is not a de Polignac number, because 43112414221 - 2²⁷ = 42978196493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43112414201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556207110 + 21556207111.

It is an arithmetic number, because the mean of its divisors is an integer number (21556207111).

Almost surely, 2^43112414221 is an apocalyptic number.

It is an amenable number.

43112414221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43112414221 is an equidigital number, since it uses as much as digits as its factorization.

43112414221 is an evil number, because the sum of its binary digits is even.

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

Adding to 43112414221 its reverse (12241421134), we get a palindrome (55353835355).

The spelling of 43112414221 in words is "forty-three billion, one hundred twelve million, four hundred fourteen thousand, two hundred twenty-one".