1051212254867 has 2 divisors, whose sum is σ = 1051212254868. Its totient is φ = 1051212254866.

The previous prime is 1051212254863. The next prime is 1051212254891. The reversal of 1051212254867 is 7684522121501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1051212254867 - 2² = 1051212254863 is a prime.

It is a super-2 number, since 2×1051212254867² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051212254863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525606127433 + 525606127434.

It is an arithmetic number, because the mean of its divisors is an integer number (525606127434).

Almost surely, 2^{1051212254867} is an apocalyptic number.

1051212254867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051212254867 is an equidigital number, since it uses as much as digits as its factorization.

1051212254867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 1051212254867 in words is "one trillion, fifty-one billion, two hundred twelve million, two hundred fifty-four thousand, eight hundred sixty-seven".