2121121212103 has 2 divisors, whose sum is σ = 2121121212104. Its totient is φ = 2121121212102.

The previous prime is 2121121212053. The next prime is 2121121212137. The reversal of 2121121212103 is 3012121211212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121121212103 - 2¹³ = 2121121203911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121121212193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060560606051 + 1060560606052.

It is an arithmetic number, because the mean of its divisors is an integer number (1060560606052).

Almost surely, 2^{2121121212103} is an apocalyptic number.

2121121212103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121121212103 is an equidigital number, since it uses as much as digits as its factorization.

2121121212103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2121121212103 its reverse (3012121211212), we get a palindrome (5133242423315).

The spelling of 2121121212103 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, one hundred three".