2121342315 has 32 divisors (see below), whose sum is σ = 3516505920. Its totient is φ = 1090715136.

The previous prime is 2121342287. The next prime is 2121342319. The reversal of 2121342315 is 5132431212.

It is not a de Polignac number, because 2121342315 - 2¹⁴ = 2121325931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121342319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315529 + ... + 322181.

It is an arithmetic number, because the mean of its divisors is an integer number (109890810).

Almost surely, 2^2121342315 is an apocalyptic number.

2121342315 is a deficient number, since it is larger than the sum of its proper divisors (1395163605).

2121342315 is a wasteful number, since it uses less digits than its factorization.

2121342315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423.

The product of its digits is 1440, while the sum is 24.

The square root of 2121342315 is about 46058.0320356830. The cubic root of 2121342315 is about 1284.9027294941.

Adding to 2121342315 its reverse (5132431212), we get a palindrome (7253773527).

The spelling of 2121342315 in words is "two billion, one hundred twenty-one million, three hundred forty-two thousand, three hundred fifteen".