2112200066121 has 16 divisors (see below), whose sum is σ = 2984010508224. Its totient is φ = 1324377112064.

The previous prime is 2112200066117. The next prime is 2112200066149. The reversal of 2112200066121 is 1216600022112.

It is a cyclic number.

It is not a de Polignac number, because 2112200066121 - 2² = 2112200066117 is a prime.

It is a super-2 number, since 2×2112200066121² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2112200066091 and 2112200066100.

It is not an unprimeable number, because it can be changed into a prime (2112200066191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14377611 + ... + 14523776.

It is an arithmetic number, because the mean of its divisors is an integer number (186500656764).

Almost surely, 2^{2112200066121} is an apocalyptic number.

It is an amenable number.

2112200066121 is a deficient number, since it is larger than the sum of its proper divisors (871810442103).

2112200066121 is a wasteful number, since it uses less digits than its factorization.

2112200066121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28902840.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 2112200066121 its reverse (1216600022112), we get a palindrome (3328800088233).

The spelling of 2112200066121 in words is "two trillion, one hundred twelve billion, two hundred million, sixty-six thousand, one hundred twenty-one".