12153421005 has 32 divisors (see below), whose sum is σ = 21223254528. Its totient is φ = 5889787200.

The previous prime is 12153420991. The next prime is 12153421039. The reversal of 12153421005 is 50012435121.

It is a happy number.

It is not a de Polignac number, because 12153421005 - 2¹⁰ = 12153419981 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 357810 + ... + 390300.

It is an arithmetic number, because the mean of its divisors is an integer number (663226704).

Almost surely, 2^12153421005 is an apocalyptic number.

12153421005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12153421005 is a deficient number, since it is larger than the sum of its proper divisors (9069833523).

12153421005 is a wasteful number, since it uses less digits than its factorization.

12153421005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34777.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12153421005 its reverse (50012435121), we get a palindrome (62165856126).

The spelling of 12153421005 in words is "twelve billion, one hundred fifty-three million, four hundred twenty-one thousand, five".