12010111030221 has 4 divisors (see below), whose sum is σ = 16013481373632. Its totient is φ = 8006740686812.

The previous prime is 12010111030219. The next prime is 12010111030271. The reversal of 12010111030221 is 12203011101021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12010111030221 - 2¹ = 12010111030219 is a prime.

It is a super-2 number, since 2×12010111030221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12010111030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010111030271) 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, 2001685171701 + ... + 2001685171706.

It is an arithmetic number, because the mean of its divisors is an integer number (4003370343408).

Almost surely, 2^{12010111030221} is an apocalyptic number.

It is an amenable number.

12010111030221 is a deficient number, since it is larger than the sum of its proper divisors (4003370343411).

12010111030221 is an equidigital number, since it uses as much as digits as its factorization.

12010111030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003370343410.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12010111030221 its reverse (12203011101021), we get a palindrome (24213122131242).

The spelling of 12010111030221 in words is "twelve trillion, ten billion, one hundred eleven million, thirty thousand, two hundred twenty-one".