1213118828827 has 2 divisors, whose sum is σ = 1213118828828. Its totient is φ = 1213118828826.

The previous prime is 1213118828807. The next prime is 1213118828849. The reversal of 1213118828827 is 7288288113121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213118828827 - 2⁷ = 1213118828699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213118828807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606559414413 + 606559414414.

It is an arithmetic number, because the mean of its divisors is an integer number (606559414414).

Almost surely, 2^{1213118828827} is an apocalyptic number.

1213118828827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213118828827 is an equidigital number, since it uses as much as digits as its factorization.

1213118828827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 688128, while the sum is 52.

The spelling of 1213118828827 in words is "one trillion, two hundred thirteen billion, one hundred eighteen million, eight hundred twenty-eight thousand, eight hundred twenty-seven".