12012010221 has 8 divisors (see below), whose sum is σ = 16568290080. Its totient is φ = 7731868592.

The previous prime is 12012010201. The next prime is 12012010243. The reversal of 12012010221 is 12201021021.

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 12012010221 - 2¹⁰ = 12012009197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012010197 and 12012010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012010201) 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, 69034455 + ... + 69034628.

It is an arithmetic number, because the mean of its divisors is an integer number (2071036260).

Almost surely, 2^12012010221 is an apocalyptic number.

It is an amenable number.

12012010221 is a deficient number, since it is larger than the sum of its proper divisors (4556279859).

12012010221 is a wasteful number, since it uses less digits than its factorization.

12012010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138069115.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12012010221 its reverse (12201021021), we get a palindrome (24213031242).

The spelling of 12012010221 in words is "twelve billion, twelve million, ten thousand, two hundred twenty-one".