2121000127 has 2 divisors, whose sum is σ = 2121000128. Its totient is φ = 2121000126.

The previous prime is 2121000113. The next prime is 2121000143. The reversal of 2121000127 is 7210001212.

It is an a-pointer prime, because the next prime (2121000143) can be obtained adding 2121000127 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121000127 - 2²³ = 2112611519 is a prime.

It is a super-2 number, since 2×2121000127² = 8997283077468032258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121000127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121000197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060500063 + 1060500064.

It is an arithmetic number, because the mean of its divisors is an integer number (1060500064).

Almost surely, 2^2121000127 is an apocalyptic number.

2121000127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121000127 is an equidigital number, since it uses as much as digits as its factorization.

2121000127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2121000127 is about 46054.3171374845. The cubic root of 2121000127 is about 1284.8336377158.

Adding to 2121000127 its reverse (7210001212), we get a palindrome (9331001339).

The spelling of 2121000127 in words is "two billion, one hundred twenty-one million, one hundred twenty-seven", and thus it is an aban number.