12220210202121 has 12 divisors (see below), whose sum is σ = 17652143035072. Its totient is φ = 8146470663576.

The previous prime is 12220210202117. The next prime is 12220210202183. The reversal of 12220210202121 is 12120201202221.

It is a happy number.

12220210202121 is a `hidden beast` number, since 1 + 2 + 220 + 210 + 20 + 212 + 1 = 666.

It is not a de Polignac number, because 12220210202121 - 2² = 12220210202117 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 = 12220210202094 and 12220210202103.

It is not an unprimeable number, because it can be changed into a prime (12220210202021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27781141 + ... + 28217586.

Almost surely, 2^{12220210202121} is an apocalyptic number.

It is an amenable number.

12220210202121 is a deficient number, since it is larger than the sum of its proper divisors (5431932832951).

12220210202121 is a wasteful number, since it uses less digits than its factorization.

12220210202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56022980 (or 56022977 counting only the distinct ones).

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

Adding to 12220210202121 its reverse (12120201202221), we get a palindrome (24340411404342).

The spelling of 12220210202121 in words is "twelve trillion, two hundred twenty billion, two hundred ten million, two hundred two thousand, one hundred twenty-one".