21111210334 has 8 divisors (see below), whose sum is σ = 33529569408. Its totient is φ = 9934687200.

The previous prime is 21111210299. The next prime is 21111210347. The reversal of 21111210334 is 43301211112.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 310458942 + ... + 310459009.

It is an arithmetic number, because the mean of its divisors is an integer number (4191196176).

Almost surely, 2^21111210334 is an apocalyptic number.

21111210334 is a deficient number, since it is larger than the sum of its proper divisors (12418359074).

21111210334 is a wasteful number, since it uses less digits than its factorization.

21111210334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620917970.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21111210334 its reverse (43301211112), we get a palindrome (64412421446).

The spelling of 21111210334 in words is "twenty-one billion, one hundred eleven million, two hundred ten thousand, three hundred thirty-four".