12222010210021 has 4 divisors (see below), whose sum is σ = 12222020721600. Its totient is φ = 12221999698444.

The previous prime is 12222010210013. The next prime is 12222010210043. The reversal of 12222010210021 is 12001201022221.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12222010210021 - 2³ = 12222010210013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222010209977 and 12222010210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222010210061) 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, 3258781 + ... + 5921458.

It is an arithmetic number, because the mean of its divisors is an integer number (3055505180400).

Almost surely, 2^{12222010210021} is an apocalyptic number.

It is an amenable number.

12222010210021 is a deficient number, since it is larger than the sum of its proper divisors (10511579).

12222010210021 is an equidigital number, since it uses as much as digits as its factorization.

12222010210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511578.

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

Adding to 12222010210021 its reverse (12001201022221), we get a palindrome (24223211232242).

The spelling of 12222010210021 in words is "twelve trillion, two hundred twenty-two billion, ten million, two hundred ten thousand, twenty-one".