12011210221 has 8 divisors (see below), whose sum is σ = 12645276320. Its totient is φ = 11377333872.

The previous prime is 12011210203. The next prime is 12011210231. The reversal of 12011210221 is 12201211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011210221 - 2⁷ = 12011210093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011210231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93226 + ... + 180868.

It is an arithmetic number, because the mean of its divisors is an integer number (1580659540).

Almost surely, 2^12011210221 is an apocalyptic number.

It is an amenable number.

12011210221 is a deficient number, since it is larger than the sum of its proper divisors (634066099).

12011210221 is an equidigital number, since it uses as much as digits as its factorization.

12011210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94875.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011210221 its reverse (12201211021), we get a palindrome (24212421242).

The spelling of 12011210221 in words is "twelve billion, eleven million, two hundred ten thousand, two hundred twenty-one".