12020101221 has 8 divisors (see below), whose sum is σ = 16579450080. Its totient is φ = 7737076592.

The previous prime is 12020101199. The next prime is 12020101229. The reversal of 12020101221 is 12210102021.

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 12020101221 - 2¹¹ = 12020099173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020101197 and 12020101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020101229) 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, 69080955 + ... + 69081128.

It is an arithmetic number, because the mean of its divisors is an integer number (2072431260).

Almost surely, 2^12020101221 is an apocalyptic number.

It is an amenable number.

12020101221 is a deficient number, since it is larger than the sum of its proper divisors (4559348859).

12020101221 is a wasteful number, since it uses less digits than its factorization.

12020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138162115.

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

Adding to 12020101221 its reverse (12210102021), we get a palindrome (24230203242).

The spelling of 12020101221 in words is "twelve billion, twenty million, one hundred one thousand, two hundred twenty-one".