1200812812687 has 2 divisors, whose sum is σ = 1200812812688. Its totient is φ = 1200812812686.

The previous prime is 1200812812679. The next prime is 1200812812709. The reversal of 1200812812687 is 7862182180021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200812812687 - 2³ = 1200812812679 is a prime.

It is a super-2 number, since 2×1200812812687² (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 (1200812812187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600406406343 + 600406406344.

It is an arithmetic number, because the mean of its divisors is an integer number (600406406344).

Almost surely, 2^{1200812812687} is an apocalyptic number.

1200812812687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200812812687 is an equidigital number, since it uses as much as digits as its factorization.

1200812812687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 46.

The spelling of 1200812812687 in words is "one trillion, two hundred billion, eight hundred twelve million, eight hundred twelve thousand, six hundred eighty-seven".