1216115333353 has 4 divisors (see below), whose sum is σ = 1268989913088. Its totient is φ = 1163240753620.

The previous prime is 1216115333351. The next prime is 1216115333429. The reversal of 1216115333353 is 3533335116121.

It is a happy number.

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 1216115333353 - 2¹ = 1216115333351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216115333351) 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, 26437289833 + ... + 26437289878.

It is an arithmetic number, because the mean of its divisors is an integer number (317247478272).

Almost surely, 2^{1216115333353} is an apocalyptic number.

It is an amenable number.

1216115333353 is a deficient number, since it is larger than the sum of its proper divisors (52874579735).

1216115333353 is an equidigital number, since it uses as much as digits as its factorization.

1216115333353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52874579734.

The product of its digits is 72900, while the sum is 37.

The spelling of 1216115333353 in words is "one trillion, two hundred sixteen billion, one hundred fifteen million, three hundred thirty-three thousand, three hundred fifty-three".