11633671121 has 4 divisors (see below), whose sum is σ = 11634484644. Its totient is φ = 11632857600.

The previous prime is 11633671111. The next prime is 11633671123. The reversal of 11633671121 is 12117633611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12117633611 = 6263 ⋅1934797.

It can be written as a sum of positive squares in 2 ways, for example, as 8334777025 + 3298894096 = 91295^2 + 57436^2 .

It is a cyclic number.

It is not a de Polignac number, because 11633671121 - 2⁶ = 11633671057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11633671123) 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, 384920 + ... + 414041.

It is an arithmetic number, because the mean of its divisors is an integer number (2908621161).

Almost surely, 2^11633671121 is an apocalyptic number.

It is an amenable number.

11633671121 is a deficient number, since it is larger than the sum of its proper divisors (813523).

11633671121 is an equidigital number, since it uses as much as digits as its factorization.

11633671121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813522.

The product of its digits is 4536, while the sum is 32.

The spelling of 11633671121 in words is "eleven billion, six hundred thirty-three million, six hundred seventy-one thousand, one hundred twenty-one".