2121022103 has 2 divisors, whose sum is σ = 2121022104. Its totient is φ = 2121022102.

The previous prime is 2121022061. The next prime is 2121022109. The reversal of 2121022103 is 3012201212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121022103 - 2¹⁰ = 2121021079 is a prime.

It is a super-2 number, since 2×2121022103² = 8997469522829085218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121022109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511051 + 1060511052.

It is an arithmetic number, because the mean of its divisors is an integer number (1060511052).

Almost surely, 2^2121022103 is an apocalyptic number.

2121022103 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121022103 is an equidigital number, since it uses as much as digits as its factorization.

2121022103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2121022103 is about 46054.5557247055. Note that the first 3 decimals coincide. The cubic root of 2121022103 is about 1284.8380751518.

Adding to 2121022103 its reverse (3012201212), we get a palindrome (5133223315).

The spelling of 2121022103 in words is "two billion, one hundred twenty-one million, twenty-two thousand, one hundred three".