12210000212221 has 16 divisors (see below), whose sum is σ = 14024338963840. Its totient is φ = 10413305904960.

The previous prime is 12210000212213. The next prime is 12210000212227. The reversal of 12210000212221 is 12221200001221.

It is a happy number.

It is not a de Polignac number, because 12210000212221 - 2³ = 12210000212213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210000212195 and 12210000212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210000212227) 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, 4349046 + ... + 6582871.

It is an arithmetic number, because the mean of its divisors is an integer number (876521185240).

Almost surely, 2^{12210000212221} is an apocalyptic number.

It is an amenable number.

12210000212221 is a deficient number, since it is larger than the sum of its proper divisors (1814338751619).

12210000212221 is a wasteful number, since it uses less digits than its factorization.

12210000212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932724.

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

Adding to 12210000212221 its reverse (12221200001221), we get a palindrome (24431200213442).

The spelling of 12210000212221 in words is "twelve trillion, two hundred ten billion, two hundred twelve thousand, two hundred twenty-one".