2112100122121 has 16 divisors (see below), whose sum is σ = 2326869393408. Its totient is φ = 1901184339600.

The previous prime is 2112100122079. The next prime is 2112100122131. The reversal of 2112100122121 is 1212210012112.

It is a cyclic number.

It is not a de Polignac number, because 2112100122121 - 2²³ = 2112091733513 is a prime.

It is a super-2 number, since 2×2112100122121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112100122095 and 2112100122104.

It is not an unprimeable number, because it can be changed into a prime (2112100122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800175 + ... + 2205556.

It is an arithmetic number, because the mean of its divisors is an integer number (145429337088).

Almost surely, 2^{2112100122121} is an apocalyptic number.

It is an amenable number.

2112100122121 is a deficient number, since it is larger than the sum of its proper divisors (214769271287).

2112100122121 is a wasteful number, since it uses less digits than its factorization.

2112100122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006372.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2112100122121 its reverse (1212210012112), we get a palindrome (3324310134233).

The spelling of 2112100122121 in words is "two trillion, one hundred twelve billion, one hundred million, one hundred twenty-two thousand, one hundred twenty-one".