21110352234 has 8 divisors (see below), whose sum is σ = 42220704480. Its totient is φ = 7036784076.

The previous prime is 21110352229. The next prime is 21110352253. The reversal of 21110352234 is 43225301112.

It is a sphenic number, since it is the product of 3 distinct primes.

21110352234 is an admirable 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, 1759196014 + ... + 1759196025.

It is an arithmetic number, because the mean of its divisors is an integer number (5277588060).

Almost surely, 2^21110352234 is an apocalyptic number.

21110352234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110352234 is a wasteful number, since it uses less digits than its factorization.

21110352234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518392044.

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

Adding to 21110352234 its reverse (43225301112), we get a palindrome (64335653346).

The spelling of 21110352234 in words is "twenty-one billion, one hundred ten million, three hundred fifty-two thousand, two hundred thirty-four".