12212000210021 has 4 divisors (see below), whose sum is σ = 12854737063200. Its totient is φ = 11569263356844.

The previous prime is 12212000210009. The next prime is 12212000210093. The reversal of 12212000210021 is 12001200021221.

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 a de Polignac number, because none of the positive numbers 2^k-12212000210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212000209978 and 12212000210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212000210321) 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, 321368426561 + ... + 321368426598.

It is an arithmetic number, because the mean of its divisors is an integer number (3213684265800).

Almost surely, 2^{12212000210021} is an apocalyptic number.

It is an amenable number.

12212000210021 is a deficient number, since it is larger than the sum of its proper divisors (642736853179).

12212000210021 is an equidigital number, since it uses as much as digits as its factorization.

12212000210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642736853178.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212000210021 its reverse (12001200021221), we get a palindrome (24213200231242).

The spelling of 12212000210021 in words is "twelve trillion, two hundred twelve billion, two hundred ten thousand, twenty-one".