1213141402217 has 2 divisors, whose sum is σ = 1213141402218. Its totient is φ = 1213141402216.

The previous prime is 1213141402181. The next prime is 1213141402223. The reversal of 1213141402217 is 7122041413121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087141960921 + 125999441296 = 1042661^2 + 354964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213141402217 - 2⁶ = 1213141402153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213141402217.

It is not a weakly prime, because it can be changed into another prime (1213141402267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606570701108 + 606570701109.

It is an arithmetic number, because the mean of its divisors is an integer number (606570701109).

Almost surely, 2^{1213141402217} is an apocalyptic number.

It is an amenable number.

1213141402217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213141402217 is an equidigital number, since it uses as much as digits as its factorization.

1213141402217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 1213141402217 its reverse (7122041413121), we get a palindrome (8335182815338).

The spelling of 1213141402217 in words is "one trillion, two hundred thirteen billion, one hundred forty-one million, four hundred two thousand, two hundred seventeen".