1008397221087 has 8 divisors (see below), whose sum is σ = 1347882571440. Its totient is φ = 670588342400.

The previous prime is 1008397221067. The next prime is 1008397221133. The reversal of 1008397221087 is 7801227938001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1008397221087 - 2³⁶ = 939677744351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008397221017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419116512 + ... + 419118917.

It is an arithmetic number, because the mean of its divisors is an integer number (168485321430).

Almost surely, 2^{1008397221087} is an apocalyptic number.

1008397221087 is a deficient number, since it is larger than the sum of its proper divisors (339485350353).

1008397221087 is an equidigital number, since it uses as much as digits as its factorization.

1008397221087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838235833.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 1008397221087 in words is "one trillion, eight billion, three hundred ninety-seven million, two hundred twenty-one thousand, eighty-seven".