43212242123251 has 2 divisors, whose sum is σ = 43212242123252. Its totient is φ = 43212242123250.

The previous prime is 43212242123191. The next prime is 43212242123291. The reversal of 43212242123251 is 15232124221234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43212242123251 - 2⁹ = 43212242122739 is a prime.

It is not a weakly prime, because it can be changed into another prime (43212242123291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606121061625 + 21606121061626.

It is an arithmetic number, because the mean of its divisors is an integer number (21606121061626).

Almost surely, 2^{43212242123251} is an apocalyptic number.

43212242123251 is a deficient number, since it is larger than the sum of its proper divisors (1).

43212242123251 is an equidigital number, since it uses as much as digits as its factorization.

43212242123251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 34.

Adding to 43212242123251 its reverse (15232124221234), we get a palindrome (58444366344485).

The spelling of 43212242123251 in words is "forty-three trillion, two hundred twelve billion, two hundred forty-two million, one hundred twenty-three thousand, two hundred fifty-one".