12210012021021 has 4 divisors (see below), whose sum is σ = 16280016028032. Its totient is φ = 8140008014012.

The previous prime is 12210012021017. The next prime is 12210012021037. The reversal of 12210012021021 is 12012021001221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12210012021021 - 2² = 12210012021017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210012021071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035002003501 + ... + 2035002003506.

It is an arithmetic number, because the mean of its divisors is an integer number (4070004007008).

Almost surely, 2^{12210012021021} is an apocalyptic number.

It is an amenable number.

12210012021021 is a deficient number, since it is larger than the sum of its proper divisors (4070004007011).

12210012021021 is an equidigital number, since it uses as much as digits as its factorization.

12210012021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070004007010.

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

Adding to 12210012021021 its reverse (12012021001221), we get a palindrome (24222033022242).

The spelling of 12210012021021 in words is "twelve trillion, two hundred ten billion, twelve million, twenty-one thousand, twenty-one".