11211000999 has 48 divisors (see below), whose sum is σ = 17791303296. Its totient is φ = 6221836800.

The previous prime is 11211000973. The next prime is 11211001003. The reversal of 11211000999 is 99900011211.

11211000999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11211000999 - 2¹⁷ = 11210869927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211000949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336984 + ... + 368754.

It is an arithmetic number, because the mean of its divisors is an integer number (370652152).

Almost surely, 2^11211000999 is an apocalyptic number.

11211000999 is a deficient number, since it is larger than the sum of its proper divisors (6580302297).

11211000999 is a wasteful number, since it uses less digits than its factorization.

11211000999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31856 (or 31839 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 33.

The spelling of 11211000999 in words is "eleven billion, two hundred eleven million, nine hundred ninety-nine", and thus it is an aban number.