21110233334 has 4 divisors (see below), whose sum is σ = 31665350004. Its totient is φ = 10555116666.

The previous prime is 21110233321. The next prime is 21110233357. The reversal of 21110233334 is 43333201112.

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277558332 + ... + 5277558335.

It is an arithmetic number, because the mean of its divisors is an integer number (7916337501).

Almost surely, 2^21110233334 is an apocalyptic number.

21110233334 is a deficient number, since it is larger than the sum of its proper divisors (10555116670).

21110233334 is a wasteful number, since it uses less digits than its factorization.

21110233334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555116669.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21110233334 its reverse (43333201112), we get a palindrome (64443434446).

The spelling of 21110233334 in words is "twenty-one billion, one hundred ten million, two hundred thirty-three thousand, three hundred thirty-four".