12010221001 has 4 divisors (see below), whose sum is σ = 12013322692. Its totient is φ = 12007119312.

The previous prime is 12010220879. The next prime is 12010221019. The reversal of 12010221001 is 10012201021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2216149776 + 9794071225 = 47076^2 + 98965^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010221001 - 2²³ = 12001832393 is a prime.

It is a super-2 number, since 2×12010221001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010221031) 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, 1545030 + ... + 1552783.

It is an arithmetic number, because the mean of its divisors is an integer number (3003330673).

Almost surely, 2^12010221001 is an apocalyptic number.

It is an amenable number.

12010221001 is a deficient number, since it is larger than the sum of its proper divisors (3101691).

12010221001 is an equidigital number, since it uses as much as digits as its factorization.

12010221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101690.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12010221001 its reverse (10012201021), we get a palindrome (22022422022).

The spelling of 12010221001 in words is "twelve billion, ten million, two hundred twenty-one thousand, one".