21342231104 has 14 divisors (see below), whose sum is σ = 42350989974. Its totient is φ = 10671115520.

The previous prime is 21342231083. The next prime is 21342231181. The reversal of 21342231104 is 40113224312.

It can be written as a sum of positive squares in only one way, i.e., 18506881600 + 2835349504 = 136040^2 + 53248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21342231104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166736117 + ... + 166736244.

Almost surely, 2^21342231104 is an apocalyptic number.

It is an amenable number.

21342231104 is a deficient number, since it is larger than the sum of its proper divisors (21008758870).

21342231104 is an equidigital number, since it uses as much as digits as its factorization.

21342231104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333472373 (or 333472363 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21342231104 its reverse (40113224312), we get a palindrome (61455455416).

The spelling of 21342231104 in words is "twenty-one billion, three hundred forty-two million, two hundred thirty-one thousand, one hundred four".