21232334333442 has 32 divisors (see below), whose sum is σ = 42541857414144. Its totient is φ = 7064590994000.

The previous prime is 21232334333393. The next prime is 21232334333461. The reversal of 21232334333442 is 24433343323212.

It is a self number, because there is not a number n which added to its sum of digits gives 21232334333442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6347467 + ... + 9096977.

It is an arithmetic number, because the mean of its divisors is an integer number (1329433044192).

Almost surely, 2^{21232334333442} is an apocalyptic number.

21232334333442 is an abundant number, since it is smaller than the sum of its proper divisors (21309523080702).

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

21232334333442 is a wasteful number, since it uses less digits than its factorization.

21232334333442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751854.

The product of its digits is 746496, while the sum is 39.

Adding to 21232334333442 its reverse (24433343323212), we get a palindrome (45665677656654).

The spelling of 21232334333442 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred thirty-four million, three hundred thirty-three thousand, four hundred forty-two".