12120010101221 has 16 divisors (see below), whose sum is σ = 13382361518400. Its totient is φ = 10884438539520.

The previous prime is 12120010101193. The next prime is 12120010101223. The reversal of 12120010101221 is 12210101002121.

12120010101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12120010101221 - 2²⁶ = 12119942992357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120010101196 and 12120010101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120010101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9390221 + ... + 10602653.

It is an arithmetic number, because the mean of its divisors is an integer number (836397594900).

Almost surely, 2^{12120010101221} is an apocalyptic number.

12120010101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12120010101221 is a deficient number, since it is larger than the sum of its proper divisors (1262351417179).

12120010101221 is a wasteful number, since it uses less digits than its factorization.

12120010101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223476.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12120010101221 its reverse (12210101002121), we get a palindrome (24330111103342).

The spelling of 12120010101221 in words is "twelve trillion, one hundred twenty billion, ten million, one hundred one thousand, two hundred twenty-one".