1217947401119 has 2 divisors, whose sum is σ = 1217947401120. Its totient is φ = 1217947401118.

The previous prime is 1217947401053. The next prime is 1217947401137. The reversal of 1217947401119 is 9111047497121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1217947401119 is a prime.

It is a super-2 number, since 2×1217947401119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217947401149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608973700559 + 608973700560.

It is an arithmetic number, because the mean of its divisors is an integer number (608973700560).

Almost surely, 2^{1217947401119} is an apocalyptic number.

1217947401119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217947401119 is an equidigital number, since it uses as much as digits as its factorization.

1217947401119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 47.

The spelling of 1217947401119 in words is "one trillion, two hundred seventeen billion, nine hundred forty-seven million, four hundred one thousand, one hundred nineteen".