12210203021121 has 64 divisors (see below), whose sum is σ = 20807331840000. Its totient is φ = 6932112575616.

The previous prime is 12210203021087. The next prime is 12210203021131. The reversal of 12210203021121 is 12112030201221.

12210203021121 is a `hidden beast` number, since 1 + 221 + 0 + 20 + 302 + 1 + 121 = 666.

It is not a de Polignac number, because 12210203021121 - 2¹⁰ = 12210203020097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210203021094 and 12210203021103.

It is not an unprimeable number, because it can be changed into a prime (12210203021131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38035360 + ... + 38355038.

It is an arithmetic number, because the mean of its divisors is an integer number (325114560000).

Almost surely, 2^{12210203021121} is an apocalyptic number.

It is an amenable number.

12210203021121 is a deficient number, since it is larger than the sum of its proper divisors (8597128818879).

12210203021121 is a wasteful number, since it uses less digits than its factorization.

12210203021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321003 (or 320997 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12210203021121 its reverse (12112030201221), we get a palindrome (24322233222342).

The spelling of 12210203021121 in words is "twelve trillion, two hundred ten billion, two hundred three million, twenty-one thousand, one hundred twenty-one".