21232333434 has 16 divisors (see below), whose sum is σ = 45731179872. Its totient is φ = 6533025648.

The previous prime is 21232333399. The next prime is 21232333453. The reversal of 21232333434 is 43433323212.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136104624 + ... + 136104779.

It is an arithmetic number, because the mean of its divisors is an integer number (2858198742).

Almost surely, 2^21232333434 is an apocalyptic number.

21232333434 is an abundant number, since it is smaller than the sum of its proper divisors (24498846438).

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

21232333434 is a wasteful number, since it uses less digits than its factorization.

21232333434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272209421.

The product of its digits is 31104, while the sum is 30.

Adding to 21232333434 its reverse (43433323212), we get a palindrome (64665656646).

The spelling of 21232333434 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-three thousand, four hundred thirty-four".