12212210102121 has 12 divisors (see below), whose sum is σ = 17648510293440. Its totient is φ = 8137480513560.

The previous prime is 12212210102117. The next prime is 12212210102137. The reversal of 12212210102121 is 12120101221221.

12212210102121 is a `hidden beast` number, since 1 + 221 + 221 + 0 + 10 + 212 + 1 = 666.

It is not a de Polignac number, because 12212210102121 - 2² = 12212210102117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12212210102094 and 12212210102103.

It is not an unprimeable number, because it can be changed into a prime (12212210102111) 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, 332721285 + ... + 332757986.

It is an arithmetic number, because the mean of its divisors is an integer number (1470709191120).

Almost surely, 2^{12212210102121} is an apocalyptic number.

It is an amenable number.

12212210102121 is a deficient number, since it is larger than the sum of its proper divisors (5436300191319).

12212210102121 is a wasteful number, since it uses less digits than its factorization.

12212210102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665481316 (or 665481313 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212210102121 its reverse (12120101221221), we get a palindrome (24332311323342).

The spelling of 12212210102121 in words is "twelve trillion, two hundred twelve billion, two hundred ten million, one hundred two thousand, one hundred twenty-one".