12010221011 has 4 divisors (see below), whose sum is σ = 12086719392. Its totient is φ = 11933722632.

The previous prime is 12010220879. The next prime is 12010221019. The reversal of 12010221011 is 11012201021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12010221011 - 2¹⁰ = 12010219987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010220983 and 12010221001.

It is not an unprimeable number, because it can be changed into a prime (12010221019) 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, 38248955 + ... + 38249268.

It is an arithmetic number, because the mean of its divisors is an integer number (3021679848).

Almost surely, 2^12010221011 is an apocalyptic number.

12010221011 is a deficient number, since it is larger than the sum of its proper divisors (76498381).

12010221011 is an equidigital number, since it uses as much as digits as its factorization.

12010221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76498380.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12010221011 its reverse (11012201021), we get a palindrome (23022422032).

The spelling of 12010221011 in words is "twelve billion, ten million, two hundred twenty-one thousand, eleven".