2100121121107 has 2 divisors, whose sum is σ = 2100121121108. Its totient is φ = 2100121121106.

The previous prime is 2100121121099. The next prime is 2100121121179. The reversal of 2100121121107 is 7011211210012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100121121107 - 2³ = 2100121121099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100121127107) 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 as a sum of consecutive naturals, namely, 1050060560553 + 1050060560554.

It is an arithmetic number, because the mean of its divisors is an integer number (1050060560554).

Almost surely, 2^{2100121121107} is an apocalyptic number.

2100121121107 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100121121107 is an equidigital number, since it uses as much as digits as its factorization.

2100121121107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 2100121121107 its reverse (7011211210012), we get a palindrome (9111332331119).

The spelling of 2100121121107 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred seven".