1012001003291 has 8 divisors (see below), whose sum is σ = 1018477126080. Its totient is φ = 1005525263808.

The previous prime is 1012001003263. The next prime is 1012001003317. The reversal of 1012001003291 is 1923001002101.

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 1012001003291 - 2²² = 1011996808987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012001003791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6767630 + ... + 6915548.

It is an arithmetic number, because the mean of its divisors is an integer number (127309640760).

Almost surely, 2^{1012001003291} is an apocalyptic number.

1012001003291 is a deficient number, since it is larger than the sum of its proper divisors (6476122789).

1012001003291 is a wasteful number, since it uses less digits than its factorization.

1012001003291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191653.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1012001003291 its reverse (1923001002101), we get a palindrome (2935002005392).

The spelling of 1012001003291 in words is "one trillion, twelve billion, one million, three thousand, two hundred ninety-one".