1011332540197 has 4 divisors (see below), whose sum is σ = 1155808617376. Its totient is φ = 866856463020.

The previous prime is 1011332540177. The next prime is 1011332540287. The reversal of 1011332540197 is 7910452331101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011332540197 - 2¹¹ = 1011332538149 is a prime.

It is a super-2 number, since 2×1011332540197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011332540107) 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 3 ways as a sum of consecutive naturals, for example, 72238038579 + ... + 72238038592.

It is an arithmetic number, because the mean of its divisors is an integer number (288952154344).

Almost surely, 2^{1011332540197} is an apocalyptic number.

It is an amenable number.

1011332540197 is a deficient number, since it is larger than the sum of its proper divisors (144476077179).

1011332540197 is an equidigital number, since it uses as much as digits as its factorization.

1011332540197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144476077178.

The product of its (nonzero) digits is 22680, while the sum is 37.

Adding to 1011332540197 its reverse (7910452331101), we get a palindrome (8921784871298).

The spelling of 1011332540197 in words is "one trillion, eleven billion, three hundred thirty-two million, five hundred forty thousand, one hundred ninety-seven".