1214210343257 has 2 divisors, whose sum is σ = 1214210343258. Its totient is φ = 1214210343256.

The previous prime is 1214210343233. The next prime is 1214210343347. The reversal of 1214210343257 is 7523430124121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110106675456 + 104103667801 = 1053616^2 + 322651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214210343257 - 2⁶ = 1214210343193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214210343557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607105171628 + 607105171629.

It is an arithmetic number, because the mean of its divisors is an integer number (607105171629).

Almost surely, 2^{1214210343257} is an apocalyptic number.

It is an amenable number.

1214210343257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214210343257 is an equidigital number, since it uses as much as digits as its factorization.

1214210343257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 1214210343257 its reverse (7523430124121), we get a palindrome (8737640467378).

The spelling of 1214210343257 in words is "one trillion, two hundred fourteen billion, two hundred ten million, three hundred forty-three thousand, two hundred fifty-seven".