2130423121 has 2 divisors, whose sum is σ = 2130423122. Its totient is φ = 2130423120.

The previous prime is 2130423103. The next prime is 2130423133. The reversal of 2130423121 is 1213240312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1291683600 + 838739521 = 35940^2 + 28961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130423121 - 2¹³ = 2130414929 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130493121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065211560 + 1065211561.

It is an arithmetic number, because the mean of its divisors is an integer number (1065211561).

Almost surely, 2^2130423121 is an apocalyptic number.

It is an amenable number.

2130423121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130423121 is an equidigital number, since it uses as much as digits as its factorization.

2130423121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2130423121 is about 46156.5068110662. The cubic root of 2130423121 is about 1286.7335424432.

Adding to 2130423121 its reverse (1213240312), we get a palindrome (3343663433).

The spelling of 2130423121 in words is "two billion, one hundred thirty million, four hundred twenty-three thousand, one hundred twenty-one".