12210020120221 has 16 divisors (see below), whose sum is σ = 15224193740160. Its totient is φ = 9513481697280.

The previous prime is 12210020120209. The next prime is 12210020120329. The reversal of 12210020120221 is 12202102001221.

It is a happy number.

It is not a de Polignac number, because 12210020120221 - 2⁷ = 12210020120093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210020120195 and 12210020120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210020130221) 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, 5930476 + ... + 7719493.

It is an arithmetic number, because the mean of its divisors is an integer number (951512108760).

Almost surely, 2^{12210020120221} is an apocalyptic number.

12210020120221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210020120221 is a deficient number, since it is larger than the sum of its proper divisors (3014173619939).

12210020120221 is a wasteful number, since it uses less digits than its factorization.

12210020120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13661604.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12210020120221 its reverse (12202102001221), we get a palindrome (24412122121442).

The spelling of 12210020120221 in words is "twelve trillion, two hundred ten billion, twenty million, one hundred twenty thousand, two hundred twenty-one".