12222100022121 has 48 divisors (see below), whose sum is σ = 19396905253440. Its totient is φ = 7354507570560.

The previous prime is 12222100022113. The next prime is 12222100022137. The reversal of 12222100022121 is 12122000122221.

It is a happy number.

It is not a de Polignac number, because 12222100022121 - 2³ = 12222100022113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12222100022094 and 12222100022103.

It is not an unprimeable number, because it can be changed into a prime (12222100022101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6973275 + ... + 8548143.

It is an arithmetic number, because the mean of its divisors is an integer number (404102192780).

Almost surely, 2^{12222100022121} is an apocalyptic number.

12222100022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222100022121 is a deficient number, since it is larger than the sum of its proper divisors (7174805231319).

12222100022121 is a wasteful number, since it uses less digits than its factorization.

12222100022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575446 (or 1575443 counting only the distinct ones).

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

Adding to 12222100022121 its reverse (12122000122221), we get a palindrome (24344100144342).

The spelling of 12222100022121 in words is "twelve trillion, two hundred twenty-two billion, one hundred million, twenty-two thousand, one hundred twenty-one".