12221044554535 has 8 divisors (see below), whose sum is σ = 14666328003600. Its totient is φ = 9776119284864.

The previous prime is 12221044554473. The next prime is 12221044554539. The reversal of 12221044554535 is 53545544012221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221044554535 - 2¹⁵ = 12221044521767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221044554491 and 12221044554500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221044554539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89469777 + ... + 89606266.

It is an arithmetic number, because the mean of its divisors is an integer number (1833291000450).

Almost surely, 2^{12221044554535} is an apocalyptic number.

12221044554535 is a deficient number, since it is larger than the sum of its proper divisors (2445283449065).

12221044554535 is a wasteful number, since it uses less digits than its factorization.

12221044554535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179089697.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 12221044554535 its reverse (53545544012221), we get a palindrome (65766588566756).

The spelling of 12221044554535 in words is "twelve trillion, two hundred twenty-one billion, forty-four million, five hundred fifty-four thousand, five hundred thirty-five".