11121230999 has 4 divisors (see below), whose sum is σ = 11122285800. Its totient is φ = 11120176200.

The previous prime is 11121230977. The next prime is 11121231049. The reversal of 11121230999 is 99903212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99903212111 = 118219 ⋅845069.

It is a cyclic number.

It is not a de Polignac number, because 11121230999 - 2²⁴ = 11104453783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121230929) 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, 511424 + ... + 532725.

It is an arithmetic number, because the mean of its divisors is an integer number (2780571450).

Almost surely, 2^11121230999 is an apocalyptic number.

11121230999 is a deficient number, since it is larger than the sum of its proper divisors (1054801).

11121230999 is a wasteful number, since it uses less digits than its factorization.

11121230999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054800.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 11121230999 in words is "eleven billion, one hundred twenty-one million, two hundred thirty thousand, nine hundred ninety-nine".