2121342319 has 2 divisors, whose sum is σ = 2121342320. Its totient is φ = 2121342318.

The previous prime is 2121342287. The next prime is 2121342329. The reversal of 2121342319 is 9132431212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121342319 - 2⁵ = 2121342287 is a prime.

It is a super-2 number, since 2×2121342319² = 9000186468760595522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121342329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060671159 + 1060671160.

It is an arithmetic number, because the mean of its divisors is an integer number (1060671160).

Almost surely, 2^2121342319 is an apocalyptic number.

2121342319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121342319 is an equidigital number, since it uses as much as digits as its factorization.

2121342319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 2121342319 is about 46058.0320791065. The cubic root of 2121342319 is about 1284.9027303017.

The spelling of 2121342319 in words is "two billion, one hundred twenty-one million, three hundred forty-two thousand, three hundred nineteen".