12111010009 has 16 divisors (see below), whose sum is σ = 13917966336. Its totient is φ = 10323363600.

The previous prime is 12111009991. The next prime is 12111010027. The reversal of 12111010009 is 90001011121.

It is an interprime number because it is at equal distance from previous prime (12111009991) and next prime (12111010027).

It is a cyclic number.

It is not a de Polignac number, because 12111010009 - 2¹³ = 12111001817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111009974 and 12111010001.

It is not an unprimeable number, because it can be changed into a prime (12111010909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570854 + ... + 1578544.

It is an arithmetic number, because the mean of its divisors is an integer number (869872896).

Almost surely, 2^12111010009 is an apocalyptic number.

It is an amenable number.

12111010009 is a deficient number, since it is larger than the sum of its proper divisors (1806956327).

12111010009 is an equidigital number, since it uses as much as digits as its factorization.

12111010009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 12111010009 in words is "twelve billion, one hundred eleven million, ten thousand, nine".