10636421121 has 20 divisors (see below), whose sum is σ = 15940102464. Its totient is φ = 7068130200.

The previous prime is 10636421101. The next prime is 10636421137. The reversal of 10636421121 is 12112463601.

It is a happy number.

10636421121 is a `hidden beast` number, since 1 + 0 + 6 + 3 + 642 + 1 + 12 + 1 = 666.

10636421121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10636421121 - 2¹⁰ = 10636420097 is a prime.

It is a super-2 number, since 2×10636421121² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10636421101) 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 19 ways as a sum of consecutive naturals, for example, 185925 + ... + 236306.

Almost surely, 2^10636421121 is an apocalyptic number.

It is an amenable number.

10636421121 is a deficient number, since it is larger than the sum of its proper divisors (5303681343).

10636421121 is an equidigital number, since it uses as much as digits as its factorization.

10636421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422554 (or 422545 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 10636421121 its reverse (12112463601), we get a palindrome (22748884722).

The spelling of 10636421121 in words is "ten billion, six hundred thirty-six million, four hundred twenty-one thousand, one hundred twenty-one".