1012001197 has 8 divisors (see below), whose sum is σ = 1050479640. Its totient is φ = 973761600.

The previous prime is 1012001191. The next prime is 1012001201. The reversal of 1012001197 is 7911002101.

It can be written as a sum of positive squares in 4 ways, for example, as 496665796 + 515335401 = 22286^2 + 22701^2 .

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 1012001197 - 2³ = 1012001189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012001191) 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 in 7 ways as a sum of consecutive naturals, for example, 51054 + ... + 68047.

It is an arithmetic number, because the mean of its divisors is an integer number (131309955).

Almost surely, 2^1012001197 is an apocalyptic number.

It is an amenable number.

1012001197 is a deficient number, since it is larger than the sum of its proper divisors (38478443).

1012001197 is a wasteful number, since it uses less digits than its factorization.

1012001197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119423.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 1012001197 is about 31811.9662548545. The cubic root of 1012001197 is about 1003.9845016602.

Adding to 1012001197 its reverse (7911002101), we get a palindrome (8923003298).

The spelling of 1012001197 in words is "one billion, twelve million, one thousand, one hundred ninety-seven".