2100121120103 has 2 divisors, whose sum is σ = 2100121120104. Its totient is φ = 2100121120102.

The previous prime is 2100121120099. The next prime is 2100121120151. The reversal of 2100121120103 is 3010211210012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100121120103 - 2² = 2100121120099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100121120003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050060560051 + 1050060560052.

It is an arithmetic number, because the mean of its divisors is an integer number (1050060560052).

Almost surely, 2^{2100121120103} is an apocalyptic number.

2100121120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100121120103 is an equidigital number, since it uses as much as digits as its factorization.

2100121120103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2100121120103 its reverse (3010211210012), we get a palindrome (5110332330115).

The spelling of 2100121120103 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred twenty thousand, one hundred three".