1012001001097 has 4 divisors (see below), whose sum is σ = 1013003976340. Its totient is φ = 1010998025856.

The previous prime is 1012001001017. The next prime is 1012001001131. The reversal of 1012001001097 is 7901001002101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400506716736 + 611494284361 = 632856^2 + 781981^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012001001097 - 2¹¹ = 1012000999049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012001001017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501486108 + ... + 501488125.

It is an arithmetic number, because the mean of its divisors is an integer number (253250994085).

Almost surely, 2^{1012001001097} is an apocalyptic number.

It is an amenable number.

1012001001097 is a deficient number, since it is larger than the sum of its proper divisors (1002975243).

1012001001097 is a wasteful number, since it uses less digits than its factorization.

1012001001097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002975242.

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

Adding to 1012001001097 its reverse (7901001002101), we get a palindrome (8913002003198).

The spelling of 1012001001097 in words is "one trillion, twelve billion, one million, one thousand, ninety-seven".