21241552233 has 16 divisors (see below), whose sum is σ = 30934939392. Its totient is φ = 12857778000.

The previous prime is 21241552229. The next prime is 21241552271. The reversal of 21241552233 is 33225514212.

It is not a de Polignac number, because 21241552233 - 2² = 21241552229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21241552233.

It is not an unprimeable number, because it can be changed into a prime (21241552133) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 370083 + ... + 423608.

It is an arithmetic number, because the mean of its divisors is an integer number (1933433712).

Almost surely, 2^21241552233 is an apocalyptic number.

It is an amenable number.

21241552233 is a deficient number, since it is larger than the sum of its proper divisors (9693387159).

21241552233 is a wasteful number, since it uses less digits than its factorization.

21241552233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794516.

The product of its digits is 14400, while the sum is 30.

The spelling of 21241552233 in words is "twenty-one billion, two hundred forty-one million, five hundred fifty-two thousand, two hundred thirty-three".