21241552234 has 24 divisors (see below), whose sum is σ = 37404399780. Its totient is φ = 9019999296.

The previous prime is 21241552229. The next prime is 21241552271. The reversal of 21241552234 is 43225514212.

It is a happy number.

21241552234 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21038632209 + 202920025 = 145047^2 + 14245^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21241552196 and 21241552205.

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 11 ways as a sum of consecutive naturals, for example, 983587 + ... + 1004950.

Almost surely, 2^21241552234 is an apocalyptic number.

21241552234 is a deficient number, since it is larger than the sum of its proper divisors (16162847546).

21241552234 is a wasteful number, since it uses less digits than its factorization.

21241552234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988662 (or 1988655 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The spelling of 21241552234 in words is "twenty-one billion, two hundred forty-one million, five hundred fifty-two thousand, two hundred thirty-four".