11961133 has 4 divisors (see below), whose sum is σ = 12347008. Its totient is φ = 11575260.

The previous prime is 11961121. The next prime is 11961143. The reversal of 11961133 is 33116911.

It is a happy number.

11961133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33116911 = 293 ⋅113027.

It is a cyclic number.

It is not a de Polignac number, because 11961133 - 2¹⁷ = 11830061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11961098 and 11961107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961113) 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, 192891 + ... + 192952.

It is an arithmetic number, because the mean of its divisors is an integer number (3086752).

Almost surely, 2^11961133 is an apocalyptic number.

It is an amenable number.

11961133 is a deficient number, since it is larger than the sum of its proper divisors (385875).

11961133 is an equidigital number, since it uses as much as digits as its factorization.

11961133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385874.

The product of its digits is 486, while the sum is 25.

The square root of 11961133 is about 3458.4870969833. The cubic root of 11961133 is about 228.6954055665.

The spelling of 11961133 in words is "eleven million, nine hundred sixty-one thousand, one hundred thirty-three".