21030052234 has 16 divisors (see below), whose sum is σ = 31722392736. Its totient is φ = 10456009200.

The previous prime is 21030052187. The next prime is 21030052243. The reversal of 21030052234 is 43225003012.

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 7 ways as a sum of consecutive naturals, for example, 472884 + ... + 515440.

It is an arithmetic number, because the mean of its divisors is an integer number (1982649546).

Almost surely, 2^21030052234 is an apocalyptic number.

21030052234 is a deficient number, since it is larger than the sum of its proper divisors (10692340502).

21030052234 is a wasteful number, since it uses less digits than its factorization.

21030052234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43941.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 21030052234 its reverse (43225003012), we get a palindrome (64255055246).

The spelling of 21030052234 in words is "twenty-one billion, thirty million, fifty-two thousand, two hundred thirty-four".