1197261120001 has 4 divisors (see below), whose sum is σ = 1197297666900. Its totient is φ = 1197224573104.

The previous prime is 1197261119959. The next prime is 1197261120049. The reversal of 1197261120001 is 1000211627911.

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 193227059776 + 1004034060225 = 439576^2 + 1002015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197261120001 - 2³³ = 1188671185409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197261130001) 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, 18224266 + ... + 18289843.

It is an arithmetic number, because the mean of its divisors is an integer number (299324416725).

Almost surely, 2^{1197261120001} is an apocalyptic number.

It is an amenable number.

1197261120001 is a deficient number, since it is larger than the sum of its proper divisors (36546899).

1197261120001 is an equidigital number, since it uses as much as digits as its factorization.

1197261120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36546898.

The product of its (nonzero) digits is 1512, while the sum is 31.

Adding to 1197261120001 its reverse (1000211627911), we get a palindrome (2197472747912).

The spelling of 1197261120001 in words is "one trillion, one hundred ninety-seven billion, two hundred sixty-one million, one hundred twenty thousand, one".