12220210012221 has 8 divisors (see below), whose sum is σ = 18104014832960. Its totient is φ = 8146806674796.

The previous prime is 12220210012187. The next prime is 12220210012237. The reversal of 12220210012221 is 12221001202221.

It is a happy number.

12220210012221 is a `hidden beast` number, since 1 + 2 + 220 + 210 + 0 + 12 + 221 = 666.

It is not a de Polignac number, because 12220210012221 - 2⁷ = 12220210012093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220210012194 and 12220210012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220210012261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226300185385 + ... + 226300185438.

It is an arithmetic number, because the mean of its divisors is an integer number (2263001854120).

Almost surely, 2^{12220210012221} is an apocalyptic number.

It is an amenable number.

12220210012221 is a deficient number, since it is larger than the sum of its proper divisors (5883804820739).

12220210012221 is an equidigital number, since it uses as much as digits as its factorization.

12220210012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452600370832 (or 452600370826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220210012221 its reverse (12221001202221), we get a palindrome (24441211214442).

The spelling of 12220210012221 in words is "twelve trillion, two hundred twenty billion, two hundred ten million, twelve thousand, two hundred twenty-one".