2121510343 has 2 divisors, whose sum is σ = 2121510344. Its totient is φ = 2121510342.

The previous prime is 2121510337. The next prime is 2121510367. The reversal of 2121510343 is 3430151212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121510343 - 2¹³ = 2121502151 is a prime.

It is a super-2 number, since 2×2121510343² = 9001612270911955298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121510373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060755171 + 1060755172.

It is an arithmetic number, because the mean of its divisors is an integer number (1060755172).

Almost surely, 2^2121510343 is an apocalyptic number.

2121510343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121510343 is an equidigital number, since it uses as much as digits as its factorization.

2121510343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2121510343 is about 46059.8560896579. The cubic root of 2121510343 is about 1284.9366536018.

Adding to 2121510343 its reverse (3430151212), we get a palindrome (5551661555).

The spelling of 2121510343 in words is "two billion, one hundred twenty-one million, five hundred ten thousand, three hundred forty-three".