11218121235963 has 24 divisors (see below), whose sum is σ = 16243868388800. Its totient is φ = 7460342298864.

The previous prime is 11218121235947. The next prime is 11218121235977. The reversal of 11218121235963 is 36953212181211.

11218121235963 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 81 + 212 + 359 + 6 + 3 = 666.

It is not a de Polignac number, because 11218121235963 - 2⁴ = 11218121235947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11218121235983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7051848 + ... + 8494986.

Almost surely, 2^{11218121235963} is an apocalyptic number.

11218121235963 is a deficient number, since it is larger than the sum of its proper divisors (5025747152837).

11218121235963 is a wasteful number, since it uses less digits than its factorization.

11218121235963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445271 (or 1445268 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 11218121235963 in words is "eleven trillion, two hundred eighteen billion, one hundred twenty-one million, two hundred thirty-five thousand, nine hundred sixty-three".