12010111211 has 4 divisors (see below), whose sum is σ = 13725841392. Its totient is φ = 10294381032.

The previous prime is 12010111153. The next prime is 12010111229. The reversal of 12010111211 is 11211101021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11211101021 = 7013 ⋅1598617.

It is a cyclic number.

It is not a de Polignac number, because 12010111211 - 2¹⁰ = 12010110187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010111192 and 12010111201.

It is not an unprimeable number, because it can be changed into a prime (12010111271) 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, 857865080 + ... + 857865093.

It is an arithmetic number, because the mean of its divisors is an integer number (3431460348).

Almost surely, 2^12010111211 is an apocalyptic number.

12010111211 is a deficient number, since it is larger than the sum of its proper divisors (1715730181).

12010111211 is an equidigital number, since it uses as much as digits as its factorization.

12010111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715730180.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12010111211 its reverse (11211101021), we get a palindrome (23221212232).

The spelling of 12010111211 in words is "twelve billion, ten million, one hundred eleven thousand, two hundred eleven".