12210212202221 has 8 divisors (see below), whose sum is σ = 13452114974688. Its totient is φ = 10990290010000.

The previous prime is 12210212202173. The next prime is 12210212202257. The reversal of 12210212202221 is 12220221201221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12210212202221 - 2⁶ = 12210212202157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12210212202193 and 12210212202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210212201221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5495143895 + ... + 5495146116.

It is an arithmetic number, because the mean of its divisors is an integer number (1681514371836).

Almost surely, 2^{12210212202221} is an apocalyptic number.

12210212202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210212202221 is a deficient number, since it is larger than the sum of its proper divisors (1241902772467).

12210212202221 is a wasteful number, since it uses less digits than its factorization.

12210212202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990290123.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12210212202221 its reverse (12220221201221), we get a palindrome (24430433403442).

The spelling of 12210212202221 in words is "twelve trillion, two hundred ten billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".