12636001224121 has 4 divisors (see below), whose sum is σ = 13784728608144. Its totient is φ = 11487273840100.

The previous prime is 12636001224097. The next prime is 12636001224127. The reversal of 12636001224121 is 12142210063621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12636001224121 - 2⁹ = 12636001223609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12636001224127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574363691995 + ... + 574363692016.

It is an arithmetic number, because the mean of its divisors is an integer number (3446182152036).

Almost surely, 2^{12636001224121} is an apocalyptic number.

12636001224121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12636001224121 is a deficient number, since it is larger than the sum of its proper divisors (1148727384023).

12636001224121 is a wasteful number, since it uses less digits than its factorization.

12636001224121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148727384022.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 12636001224121 its reverse (12142210063621), we get a palindrome (24778211287742).

The spelling of 12636001224121 in words is "twelve trillion, six hundred thirty-six billion, one million, two hundred twenty-four thousand, one hundred twenty-one".