2112100121 has 8 divisors (see below), whose sum is σ = 2122588800. Its totient is φ = 2101625680.

The previous prime is 2112100103. The next prime is 2112100127. The reversal of 2112100121 is 1210012112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112100121 - 2⁶ = 2112100057 is a prime.

It is a super-2 number, since 2×2112100121² = 8921933842256429282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2112100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405866 + ... + 411036.

It is an arithmetic number, because the mean of its divisors is an integer number (265323600).

Almost surely, 2^2112100121 is an apocalyptic number.

It is an amenable number.

2112100121 is a deficient number, since it is larger than the sum of its proper divisors (10488679).

2112100121 is a wasteful number, since it uses less digits than its factorization.

2112100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2112100121 is about 45957.5904612067. The cubic root of 2112100121 is about 1283.0340057654.

Adding to 2112100121 its reverse (1210012112), we get a palindrome (3322112233).

The spelling of 2112100121 in words is "two billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".