2121343011 has 48 divisors (see below), whose sum is σ = 3386784960. Its totient is φ = 1273466880.

The previous prime is 2121343001. The next prime is 2121343013. The reversal of 2121343011 is 1103431212.

2121343011 is a `hidden beast` number, since 21 + 213 + 430 + 1 + 1 = 666.

It is not a de Polignac number, because 2121343011 - 2⁶ = 2121342947 is a prime.

It is a super-2 number, since 2×2121343011² = 9000192340637092242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121343013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 499266 + ... + 503496.

It is an arithmetic number, because the mean of its divisors is an integer number (70558020).

Almost surely, 2^2121343011 is an apocalyptic number.

2121343011 is a deficient number, since it is larger than the sum of its proper divisors (1265441949).

2121343011 is a wasteful number, since it uses less digits than its factorization.

2121343011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396 (or 4393 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2121343011 is about 46058.0395913678. The cubic root of 2121343011 is about 1284.9028700171.

Adding to 2121343011 its reverse (1103431212), we get a palindrome (3224774223).

The spelling of 2121343011 in words is "two billion, one hundred twenty-one million, three hundred forty-three thousand, eleven".