12210011220021 has 8 divisors (see below), whose sum is σ = 16546900451424. Its totient is φ = 8006564734320.

The previous prime is 12210011219971. The next prime is 12210011220031. The reversal of 12210011220021 is 12002211001221.

12210011220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12210011220021 - 2¹⁸ = 12210010957877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210011220031) 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, 33360686211 + ... + 33360686576.

It is an arithmetic number, because the mean of its divisors is an integer number (2068362556428).

Almost surely, 2^{12210011220021} is an apocalyptic number.

It is an amenable number.

12210011220021 is a deficient number, since it is larger than the sum of its proper divisors (4336889231403).

12210011220021 is an equidigital number, since it uses as much as digits as its factorization.

12210011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66721372851.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12210011220021 its reverse (12002211001221), we get a palindrome (24212222221242).

The spelling of 12210011220021 in words is "twelve trillion, two hundred ten billion, eleven million, two hundred twenty thousand, twenty-one".