12354221553 has 16 divisors (see below), whose sum is σ = 17345280000. Its totient is φ = 7799956560.

The previous prime is 12354221549. The next prime is 12354221563. The reversal of 12354221553 is 35512245321.

It is not a de Polignac number, because 12354221553 - 2² = 12354221549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12354221533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134808 + ... + 207078.

It is an arithmetic number, because the mean of its divisors is an integer number (1084080000).

Almost surely, 2^12354221553 is an apocalyptic number.

It is an amenable number.

12354221553 is a deficient number, since it is larger than the sum of its proper divisors (4991058447).

12354221553 is a wasteful number, since it uses less digits than its factorization.

12354221553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75292.

The product of its digits is 36000, while the sum is 33.

Adding to 12354221553 its reverse (35512245321), we get a palindrome (47866466874).

The spelling of 12354221553 in words is "twelve billion, three hundred fifty-four million, two hundred twenty-one thousand, five hundred fifty-three".