1191223522353 has 4 divisors (see below), whose sum is σ = 1588298029808. Its totient is φ = 794149014900.

The previous prime is 1191223522337. The next prime is 1191223522393. The reversal of 1191223522353 is 3532253221911.

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 not a de Polignac number, because 1191223522353 - 2⁴ = 1191223522337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1191223522393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198537253723 + ... + 198537253728.

It is an arithmetic number, because the mean of its divisors is an integer number (397074507452).

Almost surely, 2^{1191223522353} is an apocalyptic number.

It is an amenable number.

1191223522353 is a deficient number, since it is larger than the sum of its proper divisors (397074507455).

1191223522353 is an equidigital number, since it uses as much as digits as its factorization.

1191223522353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397074507454.

The product of its digits is 97200, while the sum is 39.

The spelling of 1191223522353 in words is "one trillion, one hundred ninety-one billion, two hundred twenty-three million, five hundred twenty-two thousand, three hundred fifty-three".