2121400334 has 4 divisors (see below), whose sum is σ = 3182100504. Its totient is φ = 1060700166.

The previous prime is 2121400289. The next prime is 2121400349. The reversal of 2121400334 is 4330041212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530350082 + ... + 530350085.

It is an arithmetic number, because the mean of its divisors is an integer number (795525126).

Almost surely, 2^2121400334 is an apocalyptic number.

2121400334 is a deficient number, since it is larger than the sum of its proper divisors (1060700170).

2121400334 is a wasteful number, since it uses less digits than its factorization.

2121400334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060700169.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2121400334 is about 46058.6618780876. The cubic root of 2121400334 is about 1284.9144434753.

Adding to 2121400334 its reverse (4330041212), we get a palindrome (6451441546).

The spelling of 2121400334 in words is "two billion, one hundred twenty-one million, four hundred thousand, three hundred thirty-four".