252215421343 has 2 divisors, whose sum is σ = 252215421344. Its totient is φ = 252215421342.

The previous prime is 252215421329. The next prime is 252215421373. The reversal of 252215421343 is 343124512252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252215421343 is a prime.

It is a super-2 number, since 2×252215421343² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252215421299 and 252215421308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252215421313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126107710671 + 126107710672.

It is an arithmetic number, because the mean of its divisors is an integer number (126107710672).

Almost surely, 2^252215421343 is an apocalyptic number.

252215421343 is a deficient number, since it is larger than the sum of its proper divisors (1).

252215421343 is an equidigital number, since it uses as much as digits as its factorization.

252215421343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 34.

Adding to 252215421343 its reverse (343124512252), we get a palindrome (595339933595).

Subtracting 252215421343 from its reverse (343124512252), we obtain a palindrome (90909090909).

The spelling of 252215421343 in words is "two hundred fifty-two billion, two hundred fifteen million, four hundred twenty-one thousand, three hundred forty-three".