2121210127 has 2 divisors, whose sum is σ = 2121210128. Its totient is φ = 2121210126.

The previous prime is 2121210107. The next prime is 2121210131. The reversal of 2121210127 is 7210121212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121210127 - 2²³ = 2112821519 is a prime.

It is a super-3 number, since 3×2121210127³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121210107) 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, 1060605063 + 1060605064.

It is an arithmetic number, because the mean of its divisors is an integer number (1060605064).

Almost surely, 2^2121210127 is an apocalyptic number.

2121210127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121210127 is an equidigital number, since it uses as much as digits as its factorization.

2121210127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2121210127 is about 46056.5969976072. The cubic root of 2121210127 is about 1284.8760400643.

Adding to 2121210127 its reverse (7210121212), we get a palindrome (9331331339).

The spelling of 2121210127 in words is "two billion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-seven".