2134121009 has 2 divisors, whose sum is σ = 2134121010. Its totient is φ = 2134121008.

The previous prime is 2134120997. The next prime is 2134121063. The reversal of 2134121009 is 9001214312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1829443984 + 304677025 = 42772^2 + 17455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2134121009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2134121069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067060504 + 1067060505.

It is an arithmetic number, because the mean of its divisors is an integer number (1067060505).

Almost surely, 2^2134121009 is an apocalyptic number.

It is an amenable number.

2134121009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134121009 is an equidigital number, since it uses as much as digits as its factorization.

2134121009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2134121009 is about 46196.5475874551. The cubic root of 2134121009 is about 1287.4775959152.

The spelling of 2134121009 in words is "two billion, one hundred thirty-four million, one hundred twenty-one thousand, nine".